펢몺뛔헕 쏱폃몽뿕듊뗤 늨틴짌폃량믺벯췅 BOEING COMMERCIAL AIRPLANE GROUP
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING AABEAM (ABM), Beside: An aircraft is abeam a station 헽쟐ꎬ when that station is 90° to the right or left of the track of 떱뗧첨퓚량믺ퟳ닠믲폒닠랽폫몽벣돉90뛈쪱ꎬ량믺헽the aircraft. 쟐뗧첨ꆣ ABSOLUTE ALTITUDE, The actual distance the aircraft 뻸뛔룟뛈ꎬ is above the ground. 량믺샫뗘쏦뗄쪵볊뻠샫ꆣ ABSOLUTE PRESSURE, Pressure of a liquid or gas 뻸뛔톹솦ꎬ measured relative to a vacuum. 쿠뛔폚헦뿕ꎨ컞톹솦ꎩ닢뗃뗄튺쳥믲웸쳥뗄톹솦ꆣ ACARS, SEE - AIRCRAFT (OR ARINC) REPORTING 량믺춨탅톰횷뫍놨룦쾵춳ꎬ ADDRESSING AND COMMUNICATION SYSTEM 볻 Aircraftꎨor ARINCꎩReporting Addressing and Communication Systemꎮ ACCELERATION, The rate of change in velocity with 볓쯙뛈ꎬ respect to time. 쯦쪱볤뇤뮯뗄쯙뛈룄뇤싊ꆣ ACCESSORY GEARBOX, A part of the engine, 뢽볾돝싖쿤ꎬ mechanically driven by a compressor or an angle 랢뚯믺뗄튻늿럝ꎬ평톹웸믺믲즡돝싖쿤듸뚯ꎬ폃살쟽뚯gearbox, for driving components necessary for engine 튻킩쪹랢뚯믺뫍량믺릤ퟷ뗄늿볾 and airplane operations. 1TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING ACCUMULATOR (NO. 1), A container with hydraulic 탮톹웷ꎨNOꎮ1ꎩꎬ fluid pressurized by dry air or nitrogen for operation of 몬폐뾿룉퓯뿕웸믲떪웸퓶톹뗄튺톹폍뗄죝웷ꆣ떱쎻폐헽components when normal hydraulic supply is not 뎣뗄튺톹풴뿉폃쪱ꎬ룃죝웷뿉폃틔쟽뚯늿볾ꆣ available. ACCUMULATOR (NO. 2), In a computer, a special 듦뒢웷ꎨNOꎮ2ꎩꎬ storage register associated with the arithmetic logic unit, 볆쯣믺훐ꎬ튻훖폫쯣쫵싟벭ퟩ볾폐맘쾵뗄쳘뇰듦뒢별듦used for holding the results of a computation or data 웷ꎬ폃살듦럅퓋쯣뷡맻믲쫽뻝뒫쫤ꆣ transfer. ACMS, SEE - AIRCRAFT CONDITION MONITORING 량믺ힴ첬볠뿘쾵춳ꎬ SYSTEM 볻 Aircraft Condition Monitoring Systemꎮ ACTUATOR, A mechanical device operated electrically, ퟷ뚯춲ꎬ hydraulically, pneumatically or mechanically for 평뗧ꎬ튺톹ꎬ웸풴믲믺킵쟽뚯뗄믺킵ힰ훃ꎬ폃폚뒫쯍늿 transmitting motion between components. 볾횮볤뗄퓋뚯ꆣ ADC, SEE - AIR DATA COMPUTER 듳웸쫽뻝볆쯣믺ꎬ 볻Air Data Computerꎮ ADF, SEE - AUTOMATIC DIRECTION FINDER ퟔ뚯뚨쿲웷ꎬ 볻 Automatic Direction Finderꎮ ADI, Attitude Direction Indicator, An electronic display of ퟋ첬횸틽틇ꎬ airplane attitude information in pitch and roll. 폃살쿔쪾량믺뗄뢩퇶ퟋ첬뫍웂뛈뗄뗧ퟓ쿔쪾ꆣ 2TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING AERONAUTICAL RADIO INCORPORATED, ARINC is 몽뿕컞쿟뗧릫쮾ꎬ a corporation whose principal stockholders are United 훷튪막뚫캪쏀맺뚨웚뗄몽뿕릫쮾ꆢ몽뿕퓋쫤릫쮾ꆢ량믺States scheduled airlines, air transport companies, 훆퓬뎧뫍췢맺쇬뛓몽뿕릫쮾뗄ퟩ횯ꆣ웤쒿뗄쫇훆뚩늢돶냦aircraft manufacturers, and foreign flag airlines. ARINC 뗧ퟓ짨놸뫍쾵춳뗄맦랶ꆣ develops and publishes standards for electronic equipment and systems. AGILITY TUNING, The capability of the DME to 뿬쯙뗷킳ꎬ alternately tune between two different DME stations in 믺퓘DME춨맽붻쳦뗷킳솽늿뗘쏦DME뗧첨틔닢뗃살ퟔorder to get two distance readings from one 춬튻첨톯컊믺뗄솽룶뻠샫쫽뻝뗄쓜솦ꆣ interrogator. AILERON, A hinged moveable part on the trailing edge 뢱틭ꎬ of each wing for airplane roll (wing up and wing down) 뷂솬퓚쎿룶믺틭뫳풵뗄뿉뚯늿볾ꎬ폃폚뿘훆량믺뗄맶control. ꎨ믺틭쿲짏뫍쿲쿂ꎩꆣ AILERON FORCE LIMITER, An electro-mechanical 뢱틭닙ퟝ솦쿞훆웷ꎬ device for limiting the control wheel movement by the 튻훖믺뗧ힰ훃ꆣ퓚ퟔ뚯볝쪻릤ퟷ웚볤ꎬ폃살쿞훆볝쪻엌autopilot during autopilot operation. 뗄뚯ퟷ솿ꆣ AIR CLEANER, A component in the pneumatic system 뿕웸쟥뷠웷ꎬ for removing dirt from the engine air supply to the air 웸풴쾵춳샯뗄튻룶늿볾ꆣ폃폚좥돽릩뿕뗷쾵춳쪹폃뗄랢conditioning system. 뚯믺틽웸훐뗄믒뎾ꆣ 3TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING AIRPORT ELEVATION/FIELD ELEVATION, The 믺뎡뇪룟ꎬ highest point of an airport's usable runways measured 횸몣욽쏦폫믺뎡뿉폃엜뗀ퟮ룟뗣횮볤뗄뻠샫ꎬ떥캻쫇펢in feet from mean sea level. In a few countries, the 돟ꆣ폐벸룶맺볒뗄믺뎡뇪룟쫇평믺뎡믹ힼ뗣뛸뻶뚨뗄ꆣ airport elevation is determined at the airport reference point. AIR ROUTE TRAFFIC CONTROL CENTER (ARTCC), 뿕훐몽슷붻춨맜훆훐탄ꎨARTCCꎩꎬ A facility established to provide air traffic control service 룸퓚뿘훆뿕폲랶캧쓚쪹폃틇뇭량탐맦퓲량탐뗄량믺쳡to aircraft operating on IFR flight plans within controlled 릩뿕훐붻춨맜훆럾컱뗄햾첨ꆣ airspace and principally during the enroute phase of flight. AIR TRAFFIC CONTROL (ATC), A service operated by 뿕훐붻춨맜훆ꎨATCꎩꎬ appropriate authority to promote the safe, orderly and 평폐맘떱뻖맜샭ꎬ횼퓚듙뷸낲좫ꎬ훈탲ꎬ뫍킧싊뗄뿕훐expeditious flow of air traffic. 붻춨럾컱ꆣ AIR CYCLE MACHINE, A compressor and turbine on a 컐싖샤좴웷ꎬ common shaft for cooling the air in an air conditioning 쫇ힰ퓚춬튻룹훡짏뗄톹웸믺뫍컐싖ꎬ폃폚샤좴뿕뗷쾵system. The air is cooled by expansion from high to low 춳훐뗄뿕웸ꆣ뿕웸뺭톹웸믺톹쯵뫳ꎬ평죈붻뮻웷틆좥죈솿ꎬpressure across the turbine. The compressor is driven 좻뫳뺭맽컐싖ꎬ쇮컐싖듸뚯톹웸믺ꆣ춨맽컐싖횮뿕웸ꎬ컂by the turbine. 뛈쿂붵ꆣ 4TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING AIR DATA COMPUTER, A computer which produces air 듳웸쫽뻝볆쯣믺ꎬ data information, such as altitude and airspeed, based 룹뻝솿좡톹솦뫍컂뛈뛸닺짺듳웸쫽뻝쇏ꎨ룟뛈ꆢ뿕쯙on pressure and temperature measurements. 뗈ꎩ뗄볆쯣믺ꆣ AIR TRAFFIC CONTROL, A system comprised of 뿕훐붻춨맜훆ꎬ ground and airborne components used to identify, track 튻룶평뗘쏦짨놸뫍믺퓘짨놸ퟩ돉뗄쾵춳ꆣ폃살뛔량믺뷸and locate aircraft. 탐쪶뇰ꎬ룺ퟙ뫍뚨캻ꆣ AIR/GROUND SENSOR, An electrical device operated 뿕뗘뒫룐웷ꎬ by the landing gear, which transmits on ground/in air 튻룶평웰실볜닙ퟷ뗄뗧웸ힰ훃ꆣ폃폚룸뿕훐믲뗘쏦뗄량information for system operation in flight or on the 믺쾵춳퓋ퟷ뒫쫤뗘쏦ꎯ뿕훐탅쾢ꆣꎨ폐킩쾵춳횻쓜퓚뗘쏦ground. 쪹폃ꎩ AIRBORNE VIBRATION MONITOR, The AVM takes 믺퓘헱뚯볠닢웷ꎨAVMꎩꎬ the signal from the engine mounted accelerometer and AVM듓ힰ퓚랢뚯믺짏뗄볓쯙웷좡뗃탅뫅뫳볆쯣돶룃랢calculates the vibration on that engine. 뚯믺짏뗄헱뚯ꆣ AIR WAY, A control area or portion thereof established 몽쿟ꎬ in the form of a corridor equipped with radio navigation 틔ퟟ새탎쪽붨솢뗄뿘훆쟸폲ꎬ쓚폐컞쿟뗧떼몽짨놸ꆣ aids. AIRCRAFT (or ARINC) COMMUNICATIONS 량믺춨톶톰횷뫍놨룦쾵춳ꎬ ADDRESSING AND REPORTING SYSTEM, An 폐훖뿉톰횷뗄쫽뻝춨톶쾵춳ꆣ샻폃룃쾵춳뿉쪹량믺폫뗘addressable digital data link system which permits the 쏦닙ퟷ훐탄춨맽컞쿟뗧췸싧뷸탐쫽뻝뫍탅쾢뗄붻뮻ꆣ exchange of data and messages between an aircraft and a ground-based operations center over a radio network. AIRCRAFT CONDITION MONITORING SYSTEM, A 량믺ힴ첬볠뿘쾵춳ꎬ system of sensors and recorders to monitor various 튻룶샻폃뒫룐웷뫍볇슼틇뛔룷훖량믺쾵춳뗄탔쓜틔벰airplane systems' performance and status. ힴ첬뷸탐볠뿘뗄쾵춳ꆣ 5TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING AIRFOIL, A surface designed to obtain a useful reaction, 틭쏦ꎬ such as lift, from the air through which it moves. Wings, 폃틔듓웸쇷훐믱뗃랴ퟷ폃솦ꎨ죧짽솦ꎩ뗄뇭쏦ꆣ믺틭ꎬstabilizers and control surfaces are airfoils. 낲뚨쏦뫍닙ퟝ쏦뚼쫇틭쏦ꆣ AIRSPEED (IDS, TDS), The speed of the airplane 뿕쯙ꎬ through the air. 량믺퓚뿕웸훐퓋뚯뗄쯙뛈ꆣ AIRSPEED INDEX, An adjustable pointer on the 뿕쯙폎뇪ꎬ airspeed indicator. 퓚뿕쯙뇭짏뿉틔뗷헻뗄횸헫ꆣ AIRWORTHINESS, The condition of the aircraft with 쫊몽탔ꎬ respect to its aerodynamic, mechanical, and legal ability 폐맘웸뚯쓜솦ꆢ믺킵량탐쓜솦ꆢ뫍뫏램탔뗄량믺ힴ첬ꆣ to fly. ALGORITHM, A step-by-step procedure for solving a 퇝쯣램ꎬ problem, for example, the procedure for finding the 튻늽튻늽뗄뷢쳢랽램ꆣ샽죧ꎬ볆쯣튻룶쫽뗄욽랽룹뗄늽square root of a number. 훨ꆣ AIRPLANE FLIGHT MANUAL (AFM), The legal 량믺량탐쫖닡ꎨAFMꎩꎬ document containing performance and operating limits, 냼뫏탔쓜벫쿞ꎬ닙ퟷ벫쿞ꎬ닙ퟷ돌탲ꎬ웰량뫍ퟅ슽탔쓜operating procedures, and takeoff and landing 뗈쇏뗄램뚨컄볾ꆣ performance. AIRPORT ANALYSIS, A comprehensive set of takeoff 믺뎡럖컶ꎬ weight limitations for a given airport runway, generally 튻쳗헫뛔룸뚨뗄믺뎡엜뗀뗄쿪쾸훘솿쿞훆쇏ꆣ춨뎣폫presented as a function of airport temperature, wind, 믺뎡컂뛈ꆢ럧ꆢ뫍량믺뷳틭캻훃돉몯쫽맘쾵ꆣ and aircraft flap setting. 6TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING AIRSPEED BUGS, Adjustable pointers on the airspeed 뿕쯙폎뇪ꎬ indicator. 뿕쯙뇭짏뗄뿉뗷횸헫ꆣ ALLOY, A mixture of a basic metal and small amounts 뫏뷰ꎬ of other metals to change the properties of the basic 퓚뷰쫴훐볓죋짙솿웤쯻뷰쫴ꎬ뛸룄뇤웤탔훊뗄튻훖뷰쫴metal. 믬뫏컯ꆣ ALPHA SPEED, Minimum airplane speed. 펭뷇쯙뛈ꎬ 량믺뗄ퟮ킡쯙뛈ꆣ ALPHA VANE, A small moveable airfoil on the side of 펭뷇튶욬ꎬ the fuselage transmitting airplane angle relative to 캻폚믺짭닠뗄뿉뚯킡틭쏦ꆣ캪쪧쯙뺯룦쾵춳뒫쫤량믺뛔airstream for the stall warning system. 웸쇷뗄쿠뛔뷇뛈ꆣ ALTERNATE, To change from one condition to another. 붻쳦ꎬ 평튻룶ힴ뿶룄뮻떽쇭튻룶ꆣ ALTERNATE , An additional airport selected during 놸붵뎡ꎬ flight planning, usually near the destination airport, to be 훆뚩량탐볆뮮쪱ꎬ돽쇋쒿뇪믺뎡횮췢ꎬ쯹톡뗄쇭튻룶믺 used when it is desirable to divert from the original 뎡ꆣ춨뎣퓚쒿뇪믺뎡뢽뷼ꎬ틔놸늻좥쒿뇪믺뎡쪱ꎬ룄붵횮 destination airport. 폃ꆣ 7TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING ALTERNATE AERODROME, An aerodrome to which 놸폃믺뎡ꎬ an aircraft may proceed when it becomes either 떱늻뿉쓜믲늻쫊틋퓚풤톡믺뎡ퟅ슽쪱ꎬ뿉ퟷퟅ슽쪹폃뗄impossible or inadvisable to proceed to or land at the 믺뎡ꆣ aerodrome of intended landing. ALTIMETER SETTING, The adjustment of the altimeter 룟뛈뇭짨뚨ꎬ to account for local variations in atmospheric pressure. 룹뻝떱뗘듳웸톹솦뇤뮯뛸뛔룟뛈뇭쯹ퟶ뗄뗷헻ꆣ ALTITUDE ACQUIRE, A digital flight control system 룟뛈뷘믱ꎬ mode to transition from climb (or descend) to level flight. 튻훖쫽ퟖ쪽량탐닙ퟝ쾵춳ꎬ듓엀짽ꎨ믲쿂붵ꎩ룄욽뗄쒣 쪽ꆣ ALTITUDE ALERT, A flight deck alert occuring when the 룟뛈뺯룦ꎬ airplane approaches or departs a selected altitude. 떱량믺뷓뷼믲욫샫톡뚨룟뛈쪱ꎬ쯹돶쿖뗄볝쪻닕뺯룦ꆣ ALTITUDE CAPABILITY, The maximum altitude at 룟뛈쓜솦ꎬ which the airplane can be flown at for a given thrust, 퓚룸뚨뗄췆솦ꎬ쯙뛈뫍듳웸ힴ뿶쿂ꎬ량믺쓜량듯뗄ퟮ듳speed and atmosphere condition. 룟뛈ꆣ ALTITUDE HOLD (ALT HOLD), A mode of the autopilot 룟뛈놣돖ꎨALT HOLDꎩꎬ or flight director to maintain a selected altitude. ퟔ뚯볝쪻틇믲량탐횸틽틇놣돖퓚톡뚨룟뛈뗄튻훖랽쪽ꆣ ALTITUDE INTERVENTION, Pilot control of the 룟뛈룉풤ꎬ airplane's altitude during VNAV operation. 퓚뒹횱떼몽릤ퟷ맽돌훐ꎬ량탐풱뛔량탐룟뛈뗄뿘훆ꆣ AMBIENT, The surrounding atmosphere. 훜캧뮷뺳ꎨ뗘쏦웸닣ꎩꎬ 컯쳥훜캧뗄뮷뺳ꎨ쳘뇰횸듳웸ꎩꆣ 8TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING AMBIENT PRESSURE, Pressure of air surrounding an 뮷뺳톹솦ꎨ뗘쏦웸톹ꎩꎬ object, measured in pounds per square inch (psi). 컯쳥훜캧뗄뿕웸톹솦ꎬ폃쎿욽랽펢듧뛠짙냵ꎨpsiꎩ살 뛈솿ꆣ AMBIENT TEMPERATURE, Temperature of air 뮷뺳컂뛈ꎬ surrounding an object, measured in degrees Celsius 컯쳥훜캧뗄뿕웸컂뛈ꎬ폃짣쫏뛈ꎨ°Cꎩ믲뮪쫏ꎨ°Fꎩ살(°C)or degrees Fahrenheit (°F). 뛈솿ꆣ AMPERE, A unit of electrical current. One volt across 낲엠ꎬ one ohm of resistance causes current flow of one 뗧쇷뗄떥캻ꆣ1럼뗧톹퓚1얷쒷뗄뗧ퟨ짏쯹닺짺뗄뗧쇷캪ampere. 1낲엠ꆣ AMPLITUDE, The size or magnitude of a voltage or 헱럹ꎬ current waveform. 뗧톹믲뗧쇷늨탎뗄럹뛈ꆣ ANALOG, Quantities or representations that are 쒣쓢쪽ꎬ variable over a continuous range. 폃솬탸탔뇤뮯뗄탅뫅살릤ퟷꎬ믲닺짺솬탸탔뇤뮯뗄탅뫅 쾵춳ꆣ ANALOG-TO-DIGITAL, The process of converting an 듓쒣쓢쪽떽쫽ퟖ쪽ꎬ analog signal to a digital signal. 붫쒣쓢쪽탅뫅ꎬ뮻돉쫽횵쪽ꆣ AND GATE, A device or circuit with two or more inputs 폫쏅ꎬ of binary digital information and one output. The output 튻훖폐솽룶믲솽룶틔짏뗄뛾뷸캻쫽ퟖ탅쾢쫤죋ꎬ튻룶쫤is 1 only when all of the inputs are 1. The output is 0 돶뗄ힰ훃믲뗧슷ꆣ떱쯹폐쫤죋캪1ꎬ쫤돶캪1ꆣ떱죎뫎튻룶when any one or more inputs are 0. 믲튻룶틔짏뗄쫤죋캪0쪱ꎬ쫤돶캪0ꆣ 9TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING ANEROID, A sealed flexible device containing air at low 쒤뫐ꎬ pressure, which expands or contracts during change of 쓚몬뗍톹뿕웸뗄쏜럢떯탔ힰ훃ꆣ떱쯼훜캧뗄톹솦뇤뮯pressure outside the device. 쪱ꎬ믡엲헍믲쫕쯵ꆣ ANGLE GEARBOX, A part of an engine, mechanically 즡돝싖쿤ꎬ driven by the compressor, which drives the accessory 랢뚯믺뗄튻늿럖ꆣ놻톹웸믺틔믺킵랽쪽쟽뚯ꎬ좻뫳쟽뚯gearbox. A mechanical device for changing the direction 뢽볾돝싖쿤ꆣ쫇룄뇤쟽뚯랽쿲뗄믺킵ힰ훃ꆣ of drive. 펭뷇ꎬ ANGLE OF ATTACK, The angle of the wing chord in 믺틭틭쿒퓚뿕웸훐쿲잰퓋뚯쪱폫ퟔ평웸쇷횮볤뗄볐뷇ꆣ relation to the free stream airflow as it moves forward through the air. 낲ힰ뷇ꎬ ANGLE OF INCIDENCE, The acute angle which the 량믺뗄ퟝ훡폫믺틭쿒쿟쯹탎돉뗄죱뷇ꆣ wing chord makes with the longitudinal axis of the aircraft. 10TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING ANNUNCIATIONS, Audio or visual indications used to 춨룦ꎬ call attention to an event that has taken place. 떱랢짺쫂볾쪱ꎬ틔짹틴믲쒿쫓횸쪾탎돉뗄쳡쪾탅뫅ꆣ ANNUNCIATOR, A visual device consisting of a number 탅뫅없ꎬ of lights. Each light indicates the condition which exists 평튻쾵쇐횸쪾뗆ퟩ돉뗄쒿쫓ힰ훃ꆣ쎿룶횸쪾뗆뚼폐쿠펦or has existed in an associated circuit and is labeled 뗄뇪볇ꎬ폃살쿔쪾폫횮폐맘뗄뗧슷뗄쿖폐쟩뿶믲틑듦퓚뗄accordingly. 쟩뿶 ANODE, The element toward which the principal stream 헽벫ꎬ of electrons flows. 훷뗧ퟓ쇷쿲뗄벫캻ꆣ ANOMALY, Not normal. 틬뎣ꎬ 늻헽뎣ꆣ ANTENNA, A device which, used in conjunction with a 쳬쿟ꎬ transmitter or receiver, is used for radiating or receiving 튻훖폫랢짤믺믲뷓쫕믺릲춬릤ퟷ살랢짤믲뷓쫕컞쿟뗧radio waves. 늨뗄ힰ훃ꆣ ANTI-ICING, A method of preventing ice formation on 럀뇹ꎬ the wing leading edges and engine nacelles. 럀횹믺틭잰퇘뫍랢뚯믺뛌닕뷡뇹뗄튻훖랽램ꆣ ANTI-SKID, A system for providing maximum braking 럀뮬쾵춳ꎬ without skidding for any runway condition. Anti-skid 튻훖퓚죎뫎엜뗀ힴ뿶쿂ꎬ뚼쓜쳡릩ퟮ듳뗄즲뎵쓜솦뛸늻components are part of the brake system. 쪹싖첥듲뮬뗄쾵춳ꆣ럀뮬늿볾쫇즲뎵쾵춳뗄튻늿럖ꆣ 11TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING APPENDIX, A supplement to the Airplane Flight Manual 뢽슼ꎬ containing additional performance for aircraft 량믺량탐쫖닡뗄뢽볾ꎬ냼몬믹놾쫖닡훐캴쳡떽뗄량믺탎configurations not contained in the basic manual. A 첬뗄웤쯻탔쓜ꆣ쫇뢽퓚쫖닡쒩뗄늹돤닄쇏ꆣ collection of supplementary material at the end of a book. APEX PIN, A pin for joining the two sections of the 뚥쿺ꎬ torsion link on the landing gear. 폃폚솬뷓웰실볜얤솦뇛솽늿럝뗄쿺ퟓꆣ APPROACH MODE, An autopilot/flight director mode 뷸뷼랽쪽ꎬ which is a combination of localizer for roll control and 튻훖ퟛ뫏쇋뿘훆뫡닠뗄몽뗀탅뫅뫍뿘훆뢩퇶쿂뮬탅뫅glide slope for pitch control. This mode is used when full 뗄ퟔ뚯볝쪻ꎯ량탐횸틽랽쪽ꆣ헢훖랽쪽쫇퓚좫틇뇭ퟅ슽쾵instrument landing system is available. 춳헽뎣쪱닅쪹폃ꆣ APU, SEE - AUXILIARY POWER UNIT 뢨훺뚯솦ힰ훃ꎬ 볻 Auxiliary Power Unitꎮ ARINC, SEE - AERONAUTICAL RADIO 몽뿕컞쿟뗧릫쮾ꎬ INCORPORATED 볻 Aeronautical Radio Incorporatedꎮ ARM, To make ready for operation. 풤캻ꎬ 늿볾뿉틔뾪쪼릤ퟷ뗄ힴ첬ꆣ 12TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING ARC, The curved track over the ground of an aircraft 뮡쿟ꎬ flying at a constant distance from a measuring 량믺퓚캧죆DME첨뗈뻠량탐쪱뗄뮡탎몽벣ꆣ equipment (DME). AREA NAVIGATION/RNAV, A method of navigation 쟸폲떼몽ꎬ that permits aircraft operations on any desired course 죝탭량믺량탐퓚폐뗧첨닎뾼뗄떼몽탅뫅믲ퟔ놸쾵춳쓜within the coverage of station-referenced navigation 솦벫쿞랶캧쓚ꎬ량탐죎뫎풤뚨몽쿟뗄튻훖떼몽랽램ꆣ signals or within the limits of self-contained system capability. ARTIFICIAL FEEL, A force developed in the flight 쒣쓢룐뻵ꎬ control or brake system for opposing or restricting 퓚량탐닙ퟝ쾵춳믲즲뎵쾵춳훐쯹닺짺뗄튻훖폃틔뾹뻜movement. 뚯ퟷ믲쿞훆뚯ퟷ뗄솦ꆣ ASPIRATED TAT PROBE, A sensor that measures total 컼웸쪽ퟜ컂첽춷ꎬ air temperature when the airplane is in the air and that 폃살닢솿량믺퓚뿕훐쪱뗄ퟜ듳웸컂뛈뫍퓚뗘쏦쪱뗄췢 measures outside air temperature when the airplane is 뷧컂뛈ꆣ뗘쏦췢뷧컂뛈뗄닢솿쫇샻폃틽웸붫췢뷧뿕웸컼죫 on the ground. The outside air temperature is measured 첽춷ꎬ틔듯떽닢솿뗄쒿뗄ꆣ by using bleed air to draw ambient air through the sensor when the airplane is not moving. ASSEMBLY, The fitting together of a complete structure ힰ엤ꎬ or unit. ퟩ뫏돉튻룶췪헻뗄뷡릹믲ퟩ볾뗄맽돌ꆣ ASSUMED TEMPERATURE REDUCED THRUST, The 평볙짨컂뛈뛸뗃뗄복췆솦ꎬ lower thrust obtained by setting a higher than actual 퓚톡퓱웰량췆솦짨뚨횵쪱ꎬ볙뚨튻룶뇈쪵볊췢뷧뿕웸컂Outside Air Temperature (OAT). 뛈룟뗄컂뛈뛸뗃떽뗄췆솦ꆣ폃헢훖랽램뿉틔복짙랢뚯믺뗄 쒥쯰뫍캬뮤럑폃ꆣ ATC, SEE - AIR TRAFFIC CONTROL 뿕훐붻춨맜훆ꎬ 볻 Air Traffic Controlꎮ 13TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING ATE, SEE - AUTOMATIC TEST EQUIPMENT ퟔ뚯닢쫔ힰ훃ꎬ 볻 Automatic Test Equipmentꎮ ATMOSPHERIC PRESSURE, Pressure of air due to the 듳웸톹솦ꎬ earth's atmosphere, expressed in pounds per square 평폚뗘쟲훜캧뗄듳웸뛸닺짺뗄뿕웸톹솦ꎬ틔쎿욽랽듧뛠inch (psi) or inches of mercury (in Hg) or millibars (mB). 짙냵ꎨpsiꎩ믲뛠짙듧룟쮮틸훹ꎨin Hgꎩ믲뫁냍ꎨmBꎩ살 뇭쪾ꆣ ATTITUDE, The relative orientation of the airplane with 량믺ퟋ첬ꎬ respect to pitch, roll, and yaw. 량믺폫뢩퇶ꎬ웂뛈ꎬ뫍욫몽폐맘뗄쿠뛔랽쿲ꆣ AUDIO CONTROUSELECTOR PANEL, The panel in 틴욵톡퓱쏦냥ꎬ the airplane which controls and selects the routing of 량믺쓚폃살뿘훆뫍톡퓱틴욵춨슷뗄쏦냥ꆣ audio. AUTOLAND, Automatic landing using the Digital Flight ퟔ뚯ퟅ슽ꎬ Control System. 쪹폃쫽ퟖ쪽량탐닙ퟷ쾵춳살뷸탐ퟔ뚯ퟅ슽ꆣ AUTOMATIC DIRECTION FINDER, A system which ퟔ뚯뚨쿲틇ꎨADFꎩꎬ determines the direction of a radio station. 좷뚨컞쿟뗧첨랽쿲뗄쾵춳ꆣ AUTOMATIC FLIGHT CONTROL SYSTEM, A system ퟔ뚯량탐뿘훆쾵춳ꎬ composed of all necessary subsystems needed to guide 평쯹폐쓜틽떼량믺량탐뗄ퟓ쾵춳쯹ퟩ돉뗄튻룶쾵춳ꆣ the flight of an airplane. AUTOMATIC TEST EQUIPMENT, System test ퟔ뚯닢쫔ힰ훃ꎬ equipment that operates under computer control. 퓚볆쯣믺뿘훆쿂퓋ퟷ뗄쾵춳닢쫔ힰ훃ꆣ 14TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING AUTOPILOT, A system which automatically controls ퟔ뚯볝쪻틇ꎬ and guides the flight of an airplane. ퟔ뚯닙ퟝ뫍틽떼량믺량탐뗄쾵춳ꆣ AUTOPILOT FLIGHT DIRECTOR SYSTEM, An ퟔ뚯볝쪻량탐횸틽쾵춳ꎬ integrated system containing autopilot and flight director 튻룶ퟛ뫏ퟔ뚯볝쪻뫍량탐횸틽릦쓜뗄쾵춳ꆣ functions. AUTOTHROTTLE, A system which automatically ퟔ뚯폍쏅ꎬ controls the throttles of an airplane. ퟔ뚯뿘훆량믺폍쏅뗄쾵춳ꆣ AUXILIARY POWER UNIT, A small turbine engine in 뢨훺뚯솦ힰ훃ꎬ the airplane for supplying electrical and pneumatic 쫇량믺쓚뗄킡컐싖랢뚯믺ꎬ퓚뗘쏦믲뿕훐룸룷쾵춳쳡릩power for systems operation on the ground or in flight. 뗧풴뫍웸풴ꆣ AVIONICS, An acronym designating the field of aviation 몽뿕뗧ퟓ톧ꎬ electronics. 쫇몽뿕뗧ퟓ쇬폲뗄튻쳘폐쏻돆ꆣ AVM, SEE - AIRBORNE VIBRATION MONITOR 믺퓘헱뚯볠쫓웷ꎬ 볻 Airborne Vibration Monitorꎮ AXIAL FLOW COMPRESSOR, A type of compressor 훡쇷톹쯵믺ꎬ used in a gas turbine engine in which air passes through 튻훖폃폚좼웸컐싖랢뚯믺쓚뗄톹웸믺ꆣ뿕웸평랢뚯믺뗄the compressor in a straight flow, front to rear. 잰늿훡쿲쇷죋ꎬ톹쯵뫳ꎬ평뫳늿쇷돶ꆣ AXIS, An imaginary straight line or an actual physical 훡쿟ꎬ component (such as an axle) around which a body can 뿉죃컯쳥캧죆ퟅퟷ탽퓋뚯뗄튻룶쿫쿱뗄횱쿟믲쪵볊rotate. 듦퓚뗄늿볾ꎨ죧훡ꎩꆣ 15TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING B BACKCOURSE APPROACH, An approach to a runway 랴몽뗀뷸뷼ꎬ which is opposite the normal approach. For a 폫헽뎣뷸뷼쿠랴뗄뷸뷼랽쿲ꆣ떱랴몽뗀뷸뷼쪱ꎬ컞쿂뮬backcourse approach, glide slope signals are not 뗀탅뫅늢쟒몽뗀탅뫅튲뇘탫쓦랴ꆣ available and the sense of localizer signals must be reversed. BACKGROUND DATA, Data shown on the EFIS that 놳뺰쫽뻝ꎬ does not readily change, for example, navigational aids. 쿔쪾퓚뗧ퟓ량탐틇뇭쾵춳짏늻뺭뎣룄뇤뗄쫽뻝ꆣ샽죧ꎺ 떼몽짨놸ꆣ BAFFLE, A partition in a tank or reservoir to prevent 뮺돥룴냥ꎬ fluid movement in the tank or reservoir. 퓚좼폍쿤믲뮬폍쿤쓚ퟨ횹튺쳥쇷뚯뗄룴냥ꆣ BALANCE TAB, A small hinged moveable part on the 쯦뚯늹뎥욬ꎬ trailing edge of a control surface (aileron, elevator, 뷂뷓퓚닙ퟝ쏦뫳풵ꎨ뢱틭ꎬ랽쿲뛦ꎬ짽붵뛦ꎩ뗄뿉뚯늿ꆣrudder).The tab moves in an opposite direction to the 쯦뚯늹뎥욬뗄뚯ퟷ랽쿲폫닙ퟝ쏦쿠랴ꎬ틔냯훺닙ퟝ쏦퓋control surface for assisting movement of the control 뚯ꎬ복킡닙ퟝ솦ꆣ surface. 16TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING BALANCED FIELD LENGTH, The field length 욽뫢뎡뛈ꎬ associated with optimum aircraft performance when 떱헏낭컯럇쿞훆틲쯘쪹량믺듯떽ퟮ병탔쓜뗄뎡뎤ꆣ퓚듋obstacles are not a constraint. In this case, after engine 쟩뿶쿂ꎬV1쪱랢뚯믺맊헏ꎬ튪췪돉볓쯙ꆢ웰량ꆢ샫뗘35failure at V1, the distance required to accelerate, takeoff 펢돟쯹탨뻠샫뗈폚쿠춬쯙뛈쿂췪돉좫춣쯹탨뗄뻠샫ꆣ and reach a height of 35 feet is equal to the distance required to stop from the same speed. BALLAST, A weight installed in an aircraft to maintain 톹닕컯ꎬ the center of gravity within allowable limits. 캪놣돖량믺훘탄퓚탭뿉랶캧쓚쏦ힰ퓘뗄엤훘컯ꆣ BALL NUT, A fixed spherical nut driven by the 쟲탎식쒸ꎬ jackscrew for flap and stabilizer movement. 평듖훘식룋쟽뚯뗄만뚨뗄쟲탎식쒸ꎬ폃틔쪹뷳틭뫍쮮욽 낲뚨쏦퓋뚯ꆣ BAR OUT OF VIEW, A signal used to remove the flight 횸틽룋쿻쪧ꎬ director command bar(s). 폃폚돽좥량탐횸틽룋뗄탅뫅ꆣ BAROMETRIC PRESSURE, The pressure of air above 웸톹ꎬ zero pressure measured in inches of mercury (in Hg) or 쇣톹솦틔짏뗄뿕웸톹솦ꆣ춨뎣틔뛠짙듧룟쮮틸훹ꎨin in millibars (MB). Hgꎩ믲뫁냍ꎨMBꎩ살뇭쪾ꆣ BASE METAL, The underlining metal to which alloying 믹뗗뷰쫴ꎬ agents or metals are added. 횸뫏뷰훐뗄훷튪뷰쫴돉럝ꆣ BATTERY, An electrical device for changing stored 뗧욿ꎬ chemical energy into direct electric current. 붫뒢탮뗄뮯톧쓜뇤캪횱쇷뗧뗄뗧웸ힰ훃ꆣ 17TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING BATTERY BUS, An electrical conductor supplied with 뗧욿믣쇷쳵ꎬ direct current from the battery or transformer-rectifier for 붫듓뗧욿믲뇤톹헻쇷웷살뗄횱쇷뗧릩룸릤ퟷ늿볾뗄떼power supply to operating components. 뗧쳥ꆣ BATTERY CHARGER, An electrical device supplied 뗧욿돤뗧웷ꎬ with alternating current, which produces a direct current 폃붻쇷뗧쿲량믺쓚뗧욿돤뗧뗄뗧웸ힰ훃ꆣ듸폐붻쇷뗧뗄output for charging the battery on the airplane. 뗧웸ힰ훃ꎬ룃ힰ훃닺짺횱쇷뗧쿲량믺짏뗄뗧욿돤뗧ꆣ BAY, A compartment in the airplane structure. 룴닕ꎬ 량믺뷡릹훐럖룴뗄뿕볤ꆣ BCD, SEE - BINARY CODED DECIMAL 뛾뷸훆뇠싫ꎬ 볻 Binary Coded Decimalꎮ BEACON, A device which emits a signal for use as a 탅뇪ꎬ guidance or warning aid. 랢짤틽떼믲뺯룦폃탅뫅뗄ힰ훃ꆣ BEARING (NO. 1), A surface that supports a moving 훡돐ꎨNOꎮ1ꎩꎬ part and reduces friction between the two. 폃폚복쟡믺킵뚯쒥닁뗄믺킵ힰ훃ꆣ BEARING (NO. 2), The direction from an airplane to a 랽캻ꎨNOꎮ2ꎩꎬ ground station. 듓튻볜량믺떽뗘쏦첨뗄랽쿲ꆣ 18TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING BELLCRANK, A double lever in the control system for 횱뷇튡뇛ꎬ changing direction of motion. 퓚닙ퟝ쾵춳훐룄뇤퓋뚯랽쿲폃뗄쮫뇛튡뇛ꆣ BELLOWS (NO. 1), A corrugated flexible duct in the 늨컆맜ꎬ pneumatic system for absorbing expansion of duct due 웸풴쾵춳쓚쳡릩맜뗀죈헍샤쯵쯹탨튪뗄폠뗘뗄늨ힴ to heat. 죡맜ꆣ BELLOWS (NO. 2), Corrugated folded or pleated 헦뿕쒤뫐ꎬ container or compartment used to measure pressure. 튻훖뻟폐늨ힴ뇭쏦뗄죝웷ꆣ폃폚솿닢웸톹ꆣ BEZEL, The part of an instrument case for locking the 쿢잶릵풵ꎬ glass. 붫뇭쏦늣솧만뚨퓚틇뇭짏뗄좦ힴ쇣볾ꆣ BIAS, The potential difference applied between two 욫톹ꎬ points for controlling a circuit. 퓚뿘훆뗧슷뗄솽뗣횮볤뗄뗧캻닮ꆣ BILGE, The lowest part of an aircraft fuselage. A place 믺짭뢹늿ꎬ where water, dirt and other contaminants collect. 믺짭뗄ퟮ뗗늿ꎬ춨뎣쮮ꎬ퓠컯ꎬ뫍웤쯻췢살컯벯듦폚듋ꆣ 19TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING BINARY CODED DECIMAL, A system of coding each 뛾뷸훆뇠싫뗄쪮뷸훆ꎬ digit in a decimal number using the binary equivalent. 튻훖뇠싫쾵춳ꆣ폃뗈킧뛾뷸훆캻쫽뇠틫쪮뷸캻쫽뗄쎿튻 캻ꆣ BINARY NUMBER SYSTEM, A number system using 뛾뷸훆ꎬ two symbols (usually denoted 0 and 1) and having 2 as 틔솽룶럻뫅ꎨ튻냣폃0뫍1ꎩ뫍2캪뗗뗄쫽ퟖ쾵춳ꆣ its base. BIT, In the binary number system, the smallest unit of 뇈쳘ꎨ뛾뷸캻쫽ꎩꎬ information, consisting of a 0 or a 1. 뛾뷸훆훐뗄ퟮ킡탅쾢떥캻ꎬ냼삨0믲1ꆣ BITE, SEE - BUILT-IN TEST EQUIPMENT 믺쓚ퟔ닢쾵춳ꎬ 볻 Built-in Test Equipment. BLANK DISPLAY, A display that does not have any 뿕냗쿔쪾ꎬ indications, normally due to failure. 춨뎣틲맊헏뛸퓬돉뗄쿔쪾웷짏쎻폐죎뫎횸쪾ꆣ BLACK BOX, A container for electronic circuits to record 뫚쾻ퟓꎬ flight data. ힰ폐폃폚볇슼량탐쫽뻝뗄뗧슷쾵춳뗄죝웷ꆣ BLEED AIR, Air taken from the engine to power various 틽웸ꎬ aircraft accessories. 좡ퟔ랢뚯믺뛸폃틔쟽뚯량믺짏횮룷훖뢽볾뗄뿕웸ꆣ BLEED VALVE, A valve in the pneumatic system for air 틽웸믮쏅ꎬ supply from the engine or auxiliary power unit to the 웸풴쾵춳쓚ꎬ쪹살ퟔ랢뚯믺믲뢨훺뚯솦ힰ훃뗄뿕웸뷸죋pneumatic manifold. A valve on the engine for reducing 웸풴횧맜뗄믮쏅ꆣ랢뚯믺짏ꎬ폃살붵뗍톹웸믺톹솦뗄믮쏅ꆣ pressure in the compressor section. 20TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING BLOCKER DOOR, A device on the engine for blocking ퟨ쇷쏅ꎬ the normal airflow during thrust reverser operation. 랢뚯믺짏뗄튻룶ힰ훃ꆣ퓚랴췆릤ퟷ쪱폃폚ퟨ떲헽뎣뗄 웸쇷ꆣ 맄럧믺ꎬ BLOWER, An electrically operated fan for circulating air. 폃살쪹뿕웸톭뮷뗄뗧뚯럧질ꆣ 킶톹뿚룇ꎬ BLOWOUT PANEL, A panel in the structure between 솽룶룴닕횮볤뗄뿚룇ꎬ듲뾪뫳뿉쪹솽닕톹솦쿠뗈ꆣ two compartments that opens to equalize pressure in the compartments. 믺짭웰실볜ꎬ BODY GEAR, The landing gear attached to the ힰ퓚믺짭릹볜짏뗄웰실볜ꆣ fuselage structure. 듮뷓욬ꎬ BONDING JUMPER, An electrical connection between 솬뷓쒳룶늿볾폫량믺뷡릹틔탎돉뷓뗘뗄뗧뷓춷ꆣ a component and airplane structure for electrical grounding. 21TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING BOOLEAN ALGEBRA, A mathematical system for 늼뛻듺쫽ꎬ writing combinations of logical statements. 튻훖폃폚뇠킴뢴뫏싟벭쏼쳢뗄쫽톧쾵춳ꆣ BOOST PUMP, An electrically operated fuel pump for 퓶톹뇃ꎬ fuel supply from the airplane fuel tank to the fuel 듓량믺폍쿤쿲ퟜ폍맜쳡릩좼폍뗄뗧뚯뇃ꆣ manifold. BORESCOPE, An electro-optical device for looking at 뿗첽틇ꎬ internal parts of an engine through holes in the engine. 폃폚춨맽랢뚯믺쓚뗄뿗ꎨ뿗첽뿚ꎩ맛달랢뚯믺쓚늿볾뗄(borescope ports) 뗧맢짨놸ꆣ BOURDON TUBE, A curved flat tube in a pressure gage 냼뛋맜ꎬ for moving the pointer when pressure changes inside 닢톹볆쓚뗄췤쟺뇢맜ꎬ맜쓚톹솦뗄뇤뮯쪱쯼쪹횸헫틆the tube. 뚯ꎬ틔횸쪾톹솦ꆣ BRACKET, To enclose or surround. 췐볜ꎬ 폃폚ퟷ횧독ꆢힰ췐ꆢ믲캧죆횮폃ꆣ BRAKE ENERGY LIMIT WEIGHT, The maximum 즲뎵쓜솿벫쿞훘솿ꎬ takeoff weight based on the ability of the brakes to 훐뛏웰량맽돌훐ꎬ좡뻶폚즲뎵컼쫕풤뚨쓜솿횮쓜솦뗄ퟮabsorb a predetermined amount of energy during a 듳웰량훘솿ꆣ rejected takeoff. BREATHER, A vent to ambient of the engine oil system. 춨웸ힰ훃ꎬ 랢뚯믺뮬폍쾵춳폫듳웸쿠춨뗄춨웸뿚ꆣ 22TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING BUFFET, Vibration of the wings and airframe resulting 뚶헱ꎬ from unsteady airflow over the wing; caused when 평폚믺틭짏뇭쏦뗄늻컈뚨웸쇷틽웰뗄믺틭뫍믺쳥뗄헱airspeed is too slow, the bank angle is too steep, or 뚯ꆣ량탐쯙뛈첫싽믲첫뿬ꎬ웂뛈첫듳ꎬ뻹믡틽웰뚶헱ꆣ airspeed is too fast. BUILT-IN TEST EQUIPMENT, Equipment installed on ퟔ볬짨놸ꎬ the airplane and in airplane systems to test the systems 낲ힰ퓚량믺뫍량믺쾵춳훐ꎬ퓚컞췢뷓볬닢짨놸쟩뿶쿂ꎬwithout external test equipment. 폃폚볬닢쾵춳뗄짨놸ꆣ BUFFET MARGIN, The amount of residual maneuver 뚶헱풣뛈ꎬ capability present before the onset of buffet. 량믺퓚퓢폶뚶헱횮잰ꎬ쪣폠믺뚯쓜솦뗄듳킡ꆣ BUG SPEED, A preselecteed speed to be observed 폎뇪쯙뛈ꎬ during certain maneuvers, particularly the approach and 퓚쒳킩믺뚯량탐맽돌훐ꎬ쳘뇰쫇퓚뷸뷼뫍ퟅ슽쪱ꎬ량믺landing sequence. 쯹펦놣돖뗄풤뚨쯙뛈ꆣ BULKHEAD, A structural partition in the fuselage or 뇚냥쪽룴뿲ꎬ wing. 믺짭믲믺틭쓚튻훖뷡릹룴냥ꆣ BUNGEE, A mechanical device (spring or a shock 헅솦ힰ훃ꎬ absorber) for assisting landing gear operation. 폃폚킭훺웰실볜릤ퟷ뗄튻훖믺킵짨놸ꎨ떯믉믲복헰웷ꎩꆣ 믣쇷쳵ꎬ BUS, A single wire or group of wires which transfers 퓚늿볾믲ퟩ볾횮볤뒫쫤뗧ꆢ쫽뻝ꆢ믲뚨쪱뗄떥튻뗧쿟믲power, data, or timing between several units or 뗧쿟ퟩꆣ modules. 23TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING BUS DRUM, A mechanical connection with pulleys and 뚯맄싖ꎬ cables in the control system. 퓚닙ퟝ쾵춳훐ꎬ뻟폐뮬싖뫍룖쯷뗄믺킵쪽솬뷓ꆣ BUS PROTECTION PANEL, A module (black box) 믣쇷쳵럀뮤냥ꎬ containing electrical circuits for control and protection of 뫚쾻ퟓ쪽뗄ퟩ볾ꎬ쓚몬뿘훆뫍놣뮤량믺붻쇷뗧풴뗄뗧electrical alternating current supply to the airplane. 슷ꆣ BUTTERFLY VALVE, An actuator-operated, rotating 뗻탎믮쏅ꎬ device in a duct for closing and opening the duct 쫇튻룶퓚맜뗀훐평ퟷ뚯볲뿘훆뗄뚯ힰ훃ꆣ폃살맘뇕뫍passage. 뾪웴맜뗀ꆣ BUTTOCK LINE, A vertical reference plane along the ퟝ웊쿟ꎬ fuselage for horizontal measurements of the airplane. 퇘믺짭ퟟ쿲뗄뒹횱닎뾼쏦ꎬ폃폚량믺뗄쮮욽닢솿ꆣ 24TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING BYPASS VALVE, A valve through which air or fluid will 엔춨믮쏅ꎬ flow if the normal flow path is blocked. 웸쇷믲튺쇷퓚헽뎣춨뗀ퟨ죻쪱쯹뺭맽뗄믮쏅ꆣ BYTE, A group or string of binary digits. A byte is ퟖ뷚ꎬ usually eight bits long. 튻ퟩ믲튻쇐뛾뷸훆쫽ꆣ춨뎣튻룶ퟖ뷚뎤8캻ꆣ C CABIN ALTITUDE, Atmospheric pressure maintained ퟹ닕룟뛈ꎬ within the cabin, indicated in terms of feet above sea ퟹ닕쓚놣돖뗄뿕웸톹솦ꎬ틔몣냎뛠짙펢돟뇭쪾ꆣ level. CALIBRATE, To repair, adjust, fix or correct the 킣ힼꎬ measuring capabilities of a measuring device. 탞샭ꎬ뗷헻ꎬ뚨캻믲룄헽닢솿ힰ훃뗄닢솿릦쓜ꆣ CALIBRATED AIRSPEED (CAS), Indicated airspeed 킣헽뿕쯙ꎨCASꎩꎬ (IAS) corrected for position error. 퓚탞헽쇋캻훃컳닮횮뫳뗄횸쪾뿕쯙ꎨIASꎩꆣ CAM, A rotating device for movement of mechanical 춹싖ꎬ Components. 폃살틆뚯믺볾뗄튻훖뚯ힰ훃ꆣ 25TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING CAM-OUT, An autopilot condition in which the actuator 춹싖늻릤ퟷꎬ detent piston is overridden, either manually or by the 튻훖ퟔ뚯볝쪻ힴ첬ꆣ듋쪱뛦믺쯸뚨믮죻놻죋릤믲쇭튻ퟔother autopilot actuator. 뚯볝쪻뛦믺쯹뎬뿘ꆣ CAP, SEE - CAPTURE 뷘믱ꎬ 볻Captureꎮ CAPACITANCE, The measurement of electrical energy 뗧죝솿ꎬ stored in a capacitor (condenser). 뗧죝웷쓚쯹뒢듦뗄뗧쓜뗄솿뛈ꆣ CAPACITOR, An electrical component of two metal 뗧죝웷ꎬ plates separated by a dielectric material, for storing 솽욬뷰쫴훐볤폃뻸풵닄쇏룴뾪뗄뗧웷ꆣ폃틔뒢듦뗧쓜ꆣ electrical energy. CAPTURE, An autopilot or flight director function to 뷘믱ꎨCAPꎩꎬ acquire a selected mode. ퟔ뚯볝쪻틇믲량탐횸틽틇뗄믱좡톡뚨랽쪽뗄릦쓜ꆣ CARD FILE, A container on the airplane for printed 쿟슷냥뫐ꎬ circuit cards. 량믺짏낲ힰ펡쮢쿟슷냥뗄죝웷ꆣ 26TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING CASCADE, Two or more similar circuits or amplifying 벶솪ꎬ stages in which the output of one circuit provides the 솽룶믲솽룶틔짏뗄샠쯆뗧슷뗄훰벶솬뷓믲럅듳맽돌ꆣ룃input of the next. 맽돌훐ꎬ튻룶뗧슷뗄쫤돶캪쿂튻룶뗧슷뗄쫤죋ꆣ CASCADE VANE, A vane for turning the engine airflow 튶햤튶욬ꎬ during operation of thrust reverser. 퓚랴췆릤ퟷ쪱ꎬ쪹랢뚯믺웸쇷쿲쿠랴랽쿲쇷뚯뗄튶욬ꆣ CASE DRAIN, A drain carrying lubricating and cooling 뇃쾻폠폍맜ꎬ fluid from a hydraulic pump. 튺톹뇃뛠폠뗄죳뮬튺벰샤좴튺뗄업럅뿚ꆣ CATHODE, The element from which the principal 틵벫ꎬ stream of electrons flows. 뗧ퟓ쇷쇷돶뗄벫캻ꆣ CATHODE RAY TUBE, An evacuated glass tube with a 틵벫짤쿟맜ꎬ viewing screen, used for displaying information. 튻룶뻟폐쿔쿳웁쒻뗄헦뿕늣솧맜ꆣ폃폚쿔쪾탅쾢ꆣ CEILING, The height above the ground or water of the 퓆룟ꎨ퓆뗗룟ꎩꎬ base of the lowest layer of cloud below 6000 meters 6000쏗ꎨ20,000펢돟ꎩ틔쿂틑뢲룇튻냫틔짏쳬뿕뗄ퟮ(20,000 feet) covering more than half the sky. 뗍퓆닣뗗뻠샫뗘쏦믲쮮쏦뗄룟뛈ꆣ 27TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING CELSIUS, A temperature scale in which zero is the 짣쫏뛈ꎨ°Cꎩꎬ freezing point of water and 100 is the boiling point of 컂뛈뗄뛈솿떥캻ꆣ퓚듋떥캻훐ꎬ0°C뇭쪾쮮뗄뇹뗣ꎬwater. 100°C뇭쪾럐뗣ꆣ CENTER OF GRAVITY, The balance point of an object 훘탄 or rigid structure expressed in terms of percent Mean 컯쳥믲룕탔뷡릹뗄욽뫢뗣ꎬ틔욽뻹웸뚯솦쿒뗄냙럖뇈믲Aerodynamic Chord or in inches from a reference point. 뻠쒳튻닎뾼뗣죴룉펢듧살뇭쪾ꆣ CENTERING CAM, A cam for moving a mechanism to a 믘훐춹싖ꎬ neutral position. 붫믺릹틆쿲훐솢캻훃뗄춹싖ꆣ CERTIFIED CONFIGURATION, A configuration of the 뫏룱뗄ힰ믺ힴ첬ꎬ aircraft approved for operation by the local governing 평떱뗘훷맜떥캻엺ힼ쪹폃뗄량믺ힰ믺ힴ첬ꆣ agency. CENTRAL PROCESSING UNIT, In a computer or 훐퇫뒦샭웷ꎬ digital circuit, the section containing the arithmetic and 볆쯣믺믲쫽ퟖ뗧슷훐몬폐퓋쯣ꎬ싟벭ꎬ뿘훆뫍쓚늿듦 logic,control, and internal memory circuits. 뒢뗧슷뗄늿럖ꆣ CENTRIFUGAL FLOW COMPRESSOR, A type of 샫탄쪽톹웸믺ꎬ compressor in which air is taken into the center of the 톹웸믺뗄튻훖ꆣ떱뷸웸떽듯튶싖훐탄쪱ꎬ놻튶싖샫탄엗impeller and is slung outward centrifugally into a diffuser 돶뷸죋삩즢웷ꆣ퓚삩즢웷훐웸쳥쇷쯙복싽ꎬ톹솦퓶볓ꆣ where it is slowed and pressure is increased. CG, SEE - CENTER OF GRAVITY 훘탄ꎬ 볻 Center of Gravity 28TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING CHANGEOVER, Conversion from one mode to another. 뮻ꎬ 평튻룶랽쪽뮻떽쇭튻룶랽쪽ꆣ CHARGING VALVE, A valve for supplying air or fluid to 볓쳭믮쏅ꎬ a reservoir. 폃살쿲뒢듦웷돤웸믲볓튺뗄믮쏅ꆣ CHECK VALVE, A valve allowing flow in only one 떥쿲믮쏅ꎬ direction. See Non-Return Valve. 뷶죝탭떥쿲쇷뚯뗄믮쏅ꆣ볻 NonꎭReturn Valveꆣ CHECKSUM, In a computer, a summation of digits or ퟜ뫍킣퇩ꎬ bits which are primarily used for error detection. 볆쯣믺훐ꎬ냑쓇킩폃살첽닢듭컳뗄쫽폮믲캻쫽뗄ퟜ뫍뷸 탐쟳뫍볆쯣ꆣ CHIP DETECTOR, A magnetic plug in sumps of 뷰쫴쯩킼첽닢웷ꎬ lubricated components for detection of internal failure of ힰ퓚놻죳뮬뗄늿볾뮬폍믘폍맜슷짏뗄듅탔죻ퟓꆣ폃살첽the component. 닢늿볾쓚늿폐컞쯰뮵ꆣ CHORD, A structural component of spars or frames. 틭쿒ꎬ 솺믲뿲볜뗄뷡릹늿볾ꆣ 29TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING CIRCUIT, A closed path through which current flows 뗧슷ꎬ from a source, through various components, and back 튻룶뇕뫏뗄믘슷ꆣ뗧쇷평풴춷쇷돶ꎬ뺭맽룷룶풪볾쇷믘to the source. 풴춷ꆣ CIRCUIT BREAKER, A device that automatically 쳸뾪맘ꎬ interrupts the flow of electricity (current) during fault 쓜퓚맊헏쟩뿶쿂ퟔ뚯훐뛏뗧쇷틔놣뮤쿟슷늻쫜맽뗧쯰condition to protect wiring from excess current. Circuit 뮵뗄ힰ훃ꆣ쳸뾪맘튲뿉폃폚죋릤쪹쾵춳컞킧ꆣ breakers are also used as a means to manually deactivate the system. CLEARWAY 1, An area beyond the takeoff end of the 튻뫅뺻뿕뗀ꎬ runway which is clear of all non-frangible objects which 쫇엜뗀웰량뛋틔췢ꎬ늻몬죎뫎룕쳥헏낭컯뗄쟸폲ꆣ퓚볆may be used as takeoff distance available when 쯣웰량훘솿쪱룃쟸폲뿉ퟷ캪뿉폃웰량뻠샫ꆣ calculating a takeoff weight. CLEARWAY 2, A defined rectangular area on the 뛾뫅뺻뿕뗀ꎬ ground or water under the control of the appropriate 쫇퓚폐맘떱뻖맜쾽뗄뗘쏦믲쮮폲쓚튻룶뷧쿞쏷좷뗄뎤authority,selected or prepared as a suitable area over 랽탎쟸폲ꆣ퓚헢룶톡뚨뗄뫏쫊쟸폲쓚ꎬ량믺뿉췪돉돵쪼엀which an aeroplane may make a portion of its initial 짽뗄튻늿럖ꎬ짏짽떽튻룶횸뚨룟뛈ꆣ climb to a specified height. CLIMB, Phase of flight where the altitude is increasing. 엀짽ꎬ 량믺룟뛈늻뛏퓶볓뗄량탐뷗뛎ꆣ CLIMB LIMIT WEIGHT, Maximum takeoff weight based 엀짽쿞훘ꎬ on a minimum climb gradient with one engine 좡뻶폚평튻첨랢뚯믺릤ퟷ쪱뗄ퟮ뗍엀짽쳝뛈뗄ퟮ듳웰inoperative. 량훘솿ꆣ CLOCK SIGNAL, A continuous string of pulses used for 쪱훓싶돥ꎬ synchronization. 폃폚춬늽뗄솬탸싶돥탅뫅뒮ꆣ 30TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING COALESCER, A device in the water separator for 쓽뻛웷ꎬ collecting moisture from the cold air. 쮮럖샫웷쓚쫕벯샤뿕웸훐쮮럝뗄ힰ훃ꆣ COAXIAL CABLE, An electrical cable usually 춬훡뗧샂ꎬ connecting an antenna with a receiver or transmitter. 튻훖춨뎣폃살솪뷓쳬쿟폫뷓쫕믺믲랢짤믺뗄뗧샂ꆣ뗧샂The cable has an inner conductor and an outer 평훐탄떼쳥뫍췢닣뗄웁뇎쯹ퟩ돉ꆣ grounded shield. COAXIAL SHAFT, Two shafts rotating one inside the 춬탄훡ꎬ other for rotating the low and high pressure 솽룶쳗퓚튻웰탽뗄훡ꆣ폃폚쪹랢뚯믺뗍톹뫍룟톹컐싖compressors by the low and high pressure engine 럖뇰듸뚯뗍톹뫍룟톹톹웸믺ꆣ turbines. COMBUSTION CHAMBER, A part of an engine for 좼징쫒ꎬ burning fuel in the air supplied by the compressor. 랢뚯믺뗄튻늿럖ꆣ폃살쪹좼폍뫍톹웸믺쯹쳡릩뗄뿕웸쿠믬뫏뛸좼징ꆣ 31TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING COMMAND BAR, A flight director pitch or roll command 횸쇮룋ꎬ indication. 량탐횸틽틇뢩퇶믲웂뛈뗄횸쇮쿔쪾ꆣ COMPANY ROUTE, A route flown by the airplane 릫쮾몽슷ꎬ operator that is normally stored in the flight 춨뎣뒢듦퓚량탐맜샭볆쯣믺쫽뻝뿢쓚평몽뿕릫쮾량탐management computer's data base. 뗄몽슷ꆣ COMPASS LOCATOR, A low power, low or medium 싞엌뚨캻첨ꎬ frequency (L/MF) radio beacon usually installed in 폫틇뇭ퟅ슽뷸뷼쾵춳뗄풶뻠믲훐뻠횸뗣뇪엤쳗낲ힰ뗄conjunction with the outer or middle marker of an 뗍릦싊ꆢ뗍욵ꆢ믲훐욵컞쿟뗧탅뇪ힰ훃ꎨ뗍릦싊NDB첨ꎩꆣinstrument landing system (ILS). It can be used for 뺭죏뿉뫳퓚뷸뷼돌탲훐폃살떼몽ꆣ navigation as authorized in the approach procedure. 1. Outer Compass Locator (LOM), A compass 1ꎮ풶첨ꎬ locator installed in conjunction with the outer 폫틇뇭ퟅ슽뷸뷼쾵춳뗄풶횸뗣뇪엤쳗낲ힰ뗄싞marker of an instrument landing system. 엌탅뇪첨ꎨNDBꎩꆣ 2. Middle Compass Locator (LMM), A compass 2ꎮ훐첨ꎬ locator installed in conjunction with the middle 폫틇뇭ퟅ슽뷸뷼쾵춳뗄훐횸뗣뇪엤쳗낲ힰ뗄싞marker of an instrument landing system. 엌뚨캻첨ꎨNDBꎩꆣ COMPENSATION, To offset, balance, or counteract. 늹뎥ꎬ 뗖쿻ꆢ욽뫢ꆢ믲훐뫍ꆣ COMPENSATOR, A dual capacitor for changing the fuel 늹뎥웷ꎬ gaging circuit capacitance due to changes in fuel 퓚좼폍볆솿뗧슷훐ꎬ폃살룄뇤뗧슷짏뗄뗧죝ꎬ틔폫좼density. 폍쏜뛈룄뇤쯹틽웰뗄뗧죝룄뇤쿠뾹뫢뗄쮫뗧죝웷ꆣ COMPOSITE MATERIALS, Non-metallic materials used 뢴뫏닄쇏ꎬ for airplane construction. Fiberglass, Nomex, Kevlar, 폃폚량믺훆퓬뗄럇뷰쫴닄쇏ꆣ죧쿋캬늣솧ꎬNomexꎬgraphite Epoxy are composite materials. Kevlar벰쪯쒫뮷퇵쫷횬뗈ꎬ뚼쫇뢴뫏닄쇏ꆣ 32TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING COMPRESSOR, A rotating part of an engine driven by 톹웸믺ꎬ a mechanical shaft from the turbines for increasing air 랢뚯믺쓚뗄튻룶탽늿볾ꆣ평폫컐싖쿠솬뗄믺킵훡살쟽pressure and temperature before the air enters the 뚯ꎬ폃살퓶볓컼뷸뿕웸횮톹솦뫍컂뛈ꎬ틔릩좼징쫒쪹폃ꆣcombustion chamber, Low pressure compressor - front 뗍톹톹웸믺ꆪ톹웸믺뗄잰뛎ꎬ룟톹톹웸믺ꆪ톹웸믺뗄뫳section of compressor, High pressure compressor- rear 뛎ꆣ section of compressor. COMPRESSOR STALL, An event that occurs when 톹웸믺쪧쯙ꎬ there is a complete stoppage of air or reversal of air flow 떱웸쇷췪좫춣횹믲춨맽톹웸믺쪱웸쇷랽쿲쓦랴뗄튻훖through the compressor. 쿖쿳ꆣ COMPRESSOR SURGE, SEE - COMPRESSOR 톹웸믺뒭헱ꎬ 볻 Compressor Stallꎮ STALL COMPUTED AIRSPEED, Indicated airspeed 볆쯣뿕쯙ꎬ corrected for the static source error. 탞헽쇋뺲첬풴컳닮뫳뗄횸쪾뿕쯙ꆣ 33TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING COMPUTER, A device that performs arithmetic 볆쯣믺ꎬ operations, manipulates data, and makes decisions. 쓜ퟷ쯣쫽퓋쯣ꎬ쫽뻝닙ퟝꎬ뫍뻶닟뗄ힰ훃ꆣ CONDENSER, The component in an air conditioning 샤쓽웷ꎬ system where heat energy is given to the air and the 뿕뗷쾵춳훐쓜쪹죈쓜즢랢떽뿕웸훐ꎬ틔벰쪹샤뚳볁믲쪪refrigerant or moisture vapor is changed into a liquid. 웸뇤캪튺쳥뗄늿볾ꆣ CONE BOLT, A bolt in the shape of a cone for engine ힶ탎식쮨ꎬ attachment to the airplane structure. 췢탎쫇ힶ탎뗄식쮨ꎬ폃틔붫랢뚯믺솬뷓떽량믺뷡릹짏ꆣ CONFIGURATION, The position of flight controls, 탎첬ꎬ landing gear, etc., for a particular phase of flight, ., 퓚쒳튻쳘뚨량탐뷗뛎훐ꎬ량탐닙ퟝ쏦ꎬ웰실볜뗈뗄캻훃ꆣTakeoff Configuration, Landing Configuration, etc. 죧웰량탎첬ꎬퟅ슽탎첬뗈ꆣ CONFIGURATION DEVIATION LIST (CDL), Appendix 좱볾떥ꎨCDLꎩꎬ in the Airplane Flight Manual (AFM) allowing operation 량믺량탐쫖닡뗄뢽슼쯹뾪쇐뗄량믺짏쒳킩쇣볾뗄쟥떥ꆣof the airplane with certain airframe parts missing which 퓚좱짙헢샠쇣볾쪱ꎬ뿉틔량탐떫웸뚯탔쓜뿉쓜쫜떽펰쿬ꆣ may affect the aerodynamic performance of the airplane. 34TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING CONSTANT SPEED DRIVE, A hydro-mechanical 뫣쯙쟽뚯ힰ훃ꎬ component for changing variable engine gearbox speed 붫랢뚯믺돝싖쿤뗄뿉뇤쯙뇤캪뫣쯙틔쟽뚯뗧풴뗄to constant speed to drive the electrical power. 튺톹믺킵쪽늿볾ꆣ CONTROL AXES, The three axes of the airplane which 뿘훆훡ꎬ are perpendicular to each other and pass through the 춨맽량믺훘탄뮥쿠뒹횱뗄죽룶훡ꆣ center of gravity of the airplane. Pitch axis - Horizontal or lateral axis, passes through 뢩퇶훡ꆪ폖돆쮮욽훡믲뫡훡ꆣ평량믺뗄튻닠춨쿲쇭튻 the airplane from one side to the other - 닠ꆣ량믺죆듋훡뚯벴퓬돉믺쫗뗄뢩폫퇶ꆣ nose up and nose down control is by 뢩퇶뿘훆쫇평짽붵뛦살듯돉뗄ꎬ쮮욽낲뚨쏦 elevators (and stabilizer for trim). 퓲캪엤욽횮폃ꆣ Roll axis - Longitudinal axis, passes through the 뫡맶훡ꆪ폖돆ퟝ훡ꆣ평량믺뗄잰늿춨쿲뫳늿ꆣ믺틭짏 airplane from front to rear - wing up and 쿂퓋뚯평뢱틭뫍량탐죅쇷냥뿘훆ꆣ wing down control is by ailerons and flight spoilers. Yaw axis - Vertical axis, passes through the 욫몽훡ꆪ폖돆뒹횱훡ꆣ평믺짭짏랽춨쿲쿂랽ꆣ량믺죆 airplane from top to bottom - left and 듋훡뚯벴퓬돉믺쫗횮ퟳ폒퓋뚯ꎬ듋튻퓋뚯 right control is by rudder. 평랽쿲뛦뿘훆ꆣ 35TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING CONTROL COLUMN, A mechanical component used 볝쪻룋ꎬ by the flight crew for operation of ailerons, flight spoilers 량탐풱폃살닙ퟝ뢱틭ꆢ량탐죅쇷냥뫍짽붵뛦뗄믺킵늿and elevators. 볾ꆣ CONTROL SURFACE, Moveable panels on wings and 닙ퟝ쏦ꎬ tail for movement of airplane on pitch, roll and yaw axes. 믺틭뫍믺캲짏뗄뿉뚯쏦냥ꎬ폃틔닙ퟝ량믺뢩퇶ꎬ웂뛈ꎬ 뫍욫몽퓋뚯ꆣ CONTROL TAB, SEE - BALANCE TAB 닙ퟝ욬ꎬ 볻ꆰ욽뫢욬ꆱBalance Tabꎮ CONTROL AREA, A controlled airspace extending 맜훆쟸폲ꎬ upwards from a specified limit above the earth. 룟폚뗘쏦뗄횸뚨벫쿞틔짏뗄쫜맜훆뗄뿕폲ꆣ CONTROL ZONE, A controlled airspace extending 맜훆랶캧ꎬ upwards from the surface of the earth to a specified 평뗘쏦떽횸뚨뗄룟뛈틔쓚뗄쫜맜훆뗄뿕폲ꆣ upper limit. CONTROLLED AIRSPACE, An airspace of defined 쫜맜훆뿕폲ꎬ dimensions within which air traffic control service is 튻룶랶캧쏷좷뗄뿕폲ꆣ퓚룃뿕폲쓚ꎬ틇뇭량탐맦퓲량탐provided to IFR flights and to VFR flights in accordance 뫍쒿쫓량탐맦퓲량탐폐뿕훐붻춨맜훆럾컱ꆣ with the airspace classification. 36TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING CONVERSION, To change into another form. 뮻ꎬ 룄뮻떽쇭튻룶랽쪽ꆣ COORDINATES, The intersection of lines of reference, ퟸ뇪ꎬ usually expressed in degrees/minutes/tenths of minutes 믹ힼ쿟뗄쿠붻뗣ꆣ튻냣틔뺭캳뛈뗄뛈ꎯ럖ꎯ쪮럖횮튻럖of latitude and longitude, used to determine position or 뗄뛁쫽살좷뚨캻훃뫍랽캻ꆣ location. CORROSION, A chemical action which causes gradual 뢯쪴ꎬ destruction of the surface of a metal by oxidation or 퇵뮯믲뮯톧컛좾퓬돉뷰쫴뇭쏦훰붥웆뮵뗄뮯톧랴펦ꆣ chemical contamination. COWL, A removable cover around the engine sections 랢뚯믺헻쇷헖ꎬ for access to the components on the engine. 랢뚯믺췢늿뿉닰돽뗄헖ퟓꆣ랢뚯믺짏뗄릹볾뇘탫튪좡쿂 헻쇷헖뫳ꎬ닅쓜릻떽ꆣ Fan Cowl - Cover around the fan section. 럧질헻쇷헖튻럧질췢캧뗄헖ퟓꆣ Nose Cowl - Front section of the nacelle for air inlet 잰헻쇷헖튻틽떼뿕웸뷸죋랢뚯믺뗄뛌닕뗄잰뛎ꆣ to the engine. Side Cowl - Cover around the sides of the engine. 닠헻쇷헖튻랢뚯믺솽닠뗄헖ퟓꆣ Thrust Reverser Cowl - Cover around the core 랴췆헻쇷헖튻랢뚯믺훷쳥췢뗄헖ퟓꆣ section. Translating Cowl -The moveable outer portion of the 틆뚯헻쇷헖튻랴췆헻쇷헖췢뿉틆뚯뗄늿럝ꎬ퓚랴췆릤 thrust reverser cowl which is ퟷ쪱쪹폃ꆣ operated during reverse thrust. 37TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING CPU, SEE - CENTRAL PROCESSING UNIT 훐퇫뒦샭웷ꎬ 볻Central Processing Unitꎮ CROSS TRACK, At 90 degrees from the desired track 붻닦몽벣ꎨXTKꎩꎬ of the airplane. For example, cross track distance is the 폫량믺풤볆몽벣돉90ꇣ뷇뗄몽벣ꆣ샽죧ꎬ붻닦몽벣뻠샫distance from the desired track measured 90 degrees 쫇폃폫풤볆몽벣돉90ꇣ뷇솿좡뗄떽풤볆몽벣뗄뻠샫ꆣ from the desired track. CROSS-CHANNEL, Electrical wire(s) connected from 춨뗀뿧뷓ꎬ one system to another like system, for example, FCC 뗧쿟평튻룶쾵춳뷓떽쇭튻룶샠쯆쾵춳ꆣ샽죧ꎺ평FCCꆰAꆱ"A" to FCC "B". 뷓떽FCCꆰBꆱꎮ CROSSFEED, An interconnection between fuel 붻쫤ꎬ manifolds for fuel flow from one side of the airplane to 좼폍횧맜횮볤뗄붻솬짨놸ꆣ뿉쪹좼폍듓량믺튻닠쇷쿲쇚an adjacent engine or one on the other side. 뷼뗄랢뚯믺믲퓚믺짭쇭튻닠뗄랢뚯믺ꆣ CROSSFEED VALVE, A valve in the fuel crossfeed 붻쫤믮쏅ꎬ manifold for fuel flow from one side of the airplane to the 좼폍붻쫤횧맜쓚뗄튻룶믮쏅ꆣ폃폚쪹좼폍듓량믺뗄튻닠other side. 쇷쿲쇭튻닠ꆣ CRT, SEE - CATHODE RAY TUBE 틵벫짤쿟맜ꎬ 볻 Cathode Ray Tube. CRUISE, Phase of flight where altitude and speed are 톲몽ꎬ basically constant. 량믺뗄룟뛈뫍쯙뛈믹놾짏쎻폐쪲쎴뇤뮯뗄량탐뷗뛎ꆣ CRUISE ALTITUDE, An altitude or flight level 톲몽룟뛈ꎬ maintained during enroute level flight. 퓚몽쿟짏쮮욽량탐웚볤ꎬ량믺쯹놣돖뗄룟뛈믲량탐룟 뛈닣ꆣ 38TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING CSD, SEE - CONSTANT SPEED DRIVE 뫣쯙쟽뚯ힰ훃ꎬ 볻 Constant Speed Driveꎮ CURE, A chemical change which takes place in a resin 만뮯ꎬ and fiber based component causing it to solidify. 쫷횬뫍쿋캬늿볾쓚뮯톧랴펦쪹횮돉캪만쳥뗄뇤뮯맽돌ꆣ CYCLE, A complete series of events that take place 훜웚ꎬ regularly normally in a continual sequence. 늻뛏훘뢴랢짺뗄쫂볾뗄튻룶췪헻쾵쇐ꆣ D DAMPER, A device for slowing down or limiting ퟨ쓡웷ꎬ movement. 폃살쪹퓋뚯복싽뗄튻훖믺릹ꆣ DASHPOT A mechanical damper for slowing down 뮺돥웷ꎬ movement by restricting fluid flow. 폃쿞훆튺쳥쇷뚯뗄랽램틔복싽컯쳥퓋뚯뗄믺킵쪽ퟨ 쓡웷ꆣ DATA, Another name for information. 쫽뻝ꎬ 쇏뗄쇭튻쏻돆ꆣ DATA BASE, Stored information which is used as the 쫽뻝뿢ꎬ basis for computation. 뒢듦웰살틔뇣퓚볆쯣쪱쪹폃뗄쇏ꆣ DATA BUS, A conductor over which digital data is . 쫽뻝ퟜ쿟ꎬ transmitted. 튻쳵믲튻뛔떼쿟ꎬ폃살뒫쫤쫽ퟖ탅쾢뗄춨뗀ꆣ DECELERATION, To decrease in velocity. 복쯙ꎬ 쯙뛈쯦쪱볤뗄뗝복솿ꆣ 39TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING DECIBEL (db), A unit of gain derived by computing the 럖놴ꎬ ratio of input power to output power. 틔쫤죋폫쫤돶릦싊뗄뇈싊살췆쯣뗄튻룶퓶솿떥캻ꆣ럖놴 춨뎣뇭쪾솽룶짹틴탅뫅믲뗧솦탅뫅퓚릦싊믲잿뛈랽쏦뗄 쿠뛔닮뇰뗄떥캻ꎬ쿠떱폚솽룶쮮욽뗄뇈싊뗄뎣폃뛔쫽뗄쪮 놶 DECISION ALTITUDE/HEIGHT (DA/H), A specified 뻶뛏룟뛈/룟ꎨDAꎯHꎩꎬ altitude or height (A/H) in the precision approach at 퓚볌탸뷸뷼뇘탨뗄쒿쫓닎뾼쎻폐붨솢뗄쟩뿶쿂뾪쪼뢴which a missed approach must be initiated if the 량뗄뺫쏜뷸뷼훐뗄튻룶횸뚨룟뛈믲룟ꎨAꎯHꎩꆣ required visual reference to continue the approach has not been established. DECISION HEIGHT (DH) 1, With respect to the 뻶뛏룟ꎨDHꎩ1ꎬ operation of aircraft, means the height at which a 뻍량믺닙ퟝ뛸싛ꎬ횸퓚쪹폃틇뇭ퟅ슽쾵춳믲뺫쏜ퟅ슽샗decision must be made, during an ILS or PAR 듯틽떼뷸뷼쪱ꎬ뇘탫튪ퟷ돶뗄쫇볌탸뷸뷼ꎬ뮹쫇훐뛏뷸뎡instrument approach, to either continue the approach or 뢴량뻶뚨쪱뗄룟ꆣ to execute a missed approach. DECISION HEIGHT (DH) 2, An altitude used during a 뻶뛏룟ꎨDHꎩ2ꎬ precision approach to trigger the decision of either 뺫쏜뷸뷼쪱닺짺볌탸ퟅ슽뮹쫇뢴량뻶뚨뗄룟ꆣ landing or go-around. DECOMPRESSION, The loss of internal aircraft air 쪧톹ꎬ pressure. 량믺쪧좥쓚늿뿕웸톹솦ꆣ DE-ENERGIZE, To turn off or cause to not operate. 뛏뾪ꎬ 맘뛏믲쪹늻릤ퟷꆣ DEFUEL, A method for removing fuel from the tanks 업폍ꎬ using airplane fuel pumps or external suction. 폃량믺뗄폍뇃믲췢늿뗄컼폍ힰ훃붫좼폍듓좼폍쿤업돶뗄랽램ꆣ 40TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING DEFUELING VALVE, A valve in the fuel system for 업폍믮쏅ꎬ defueling the tanks and for transferring fuel between the 좼폍쾵춳훐뗄믮쏅ꆣ폃틔캪좼폍쿤업폍뫍퓚좼폍쿤횮볤tanks. 쫤쯍좼폍ꆣ DE-ICING, Removing ice after it has formed on aircraft. 돽뇹ꎬ 돽좥틑쓽뷡퓚량믺짏뗄뇹ꆣ DELETE, To remove or cancel. 즾돽ꎬ 즾좥믲좡쿻ꆣ DELTA, Change or difference. 뇤솿ꎬ 뇤뮯믲닮틬ꆣ DEPARTURE CONTROL, A function of an approach 샫뎡뿘훆ꎬ control facility providing air traffic control service for 룸폃틇뇭량탐맦퓲샫뎡ꎬ뫍퓚쒳훖쟩뿶쿂폃쒿쫓량탐 departing IFR and, under certain conditions, VFR 맦퓲샫뎡뗄량믺쳡릩뿕훐붻춨맜훆럾컱뗄뷸뷼맜훆짨쪩aircraft. 뗄튻훖릦쓜ꆣ DEMODULATION, The process of retrieving information 뷢뗷ꎬ (modulation) voltage from a modulated carrier voltage. 듓퓘늨뗧톹훐믱뗃뗷훆뗧톹뗄뒦샭맽돌ꆣ DEMODULATOR, A device or circuit which performs 뷢뗷웷ꎬ the process of demodulation. 췪돉뷢뗷맽돌뗄ힰ훃믲뗧슷ꆣ DEPRESSURIZATION VALVE, A valve in the hydraulic 복톹랧ꎬ system for decreasing hydraulic reservoir air pressure to 퓚튺톹쾵춳훐ꎬ붫튺톹폍쿤뿕웸톹솦복훁폫훜캧뮷뺳 ambient pressure. 톹솦쿠춬뗄믮쏅ꆣ 41TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING DESCENT, Phase of flight where altitude is decreasing. 쿂붵ꎬ 량믺룟뛈늻뛏붵뗍뗄량탐뷗뛎ꆣ DETAILED FLIGHT PLANNING, The calculation of fuel 쿪쾸량탐볆뮮ꎬ and required for a trip by considering each phase of 붫몽냠훐뗄쎿룶뷗뛎ꎨ죧엀짽ꎬ톲몽ꎬ쿂붵ꎬ놸붵ꎩ뚼flight (climb, cruise, descent, reserves). 쇐죋뾼싇ꎬ살볆쯣룃몽냠쯹탨튪뗄좼폍솿ꆣ DETECTOR, An electrical device for sensing normal or 첽닢웷ꎬ abnormal conditions. 폃살룐펦쟩뿶횮헽뎣폫럱뗄뗧웸ힰ훃ꆣ DETENT SOLENOID, An electrical solenoid used for 쯸뚨뗧듅쿟좦ꎬ controlling the engagement of the actuator output. 폃폚뿘훆ퟷ뚯웷쫤돶뷓춨뗄뗧듅쿟좦ꆣ DEVIATION, To change from a specified course or 욫닮ꎬ procedure. 폫횸뚨뗄몽뗀믲돌탲횮닮ꆣ DIAPHRAGM, A flexible part for operating a valve 룴쒤ꎬ mechanism by pressure. 폃웸톹믲튺톹닙ퟷ뗄믮쏅믺릹훐뗄죡탔늿볾ꆣ 42TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING DIELECTRIC, A material which does not conduct 뗧뷩훊ꎬ electricity and used between the plates of a capacitor 튻훖폃폚뗧죝웷냥횮볤뗄늻떼뗧뗄닄쇏ꆣ (condenser). DIFFERENTIAL PRESSURE, Pressure relative to 톹닮ꎬ another pressure in the same system, measured in 쿠뛔폚춬튻쾵춳쓚쇭튻룶톹솦뗄톹솦ꎬ틔쎿욽랽펢듧 pounds per square inch differential (psid). 뛠짙냵톹닮볆쯣ꎨpsidꎩꆣ DIFFUSER, A part of an engine between the 삩즢웷ꎬ compressor and combustion chamber for reducing the 랢뚯믺쓚톹웸믺뫍좼징쫒볤뗄튻룶늿볾ꎬ폃살붵뗍뿕 airflow speed and increasing the air pressure. 웸쇷쯙늢퓶룟뿕웸톹솦ꆣ DIGITAL, Digital refers to a signal whose amplitude 쫽ퟖ쪽ꎬ remains constant for a finite period of time. Digital 횸튻훖탅뫅ꆣ룃탅뫅퓚튻뚨뗄쪱볤쓚ꎬ헱럹놣돖늻뇤ꆣsignals are commonly represented as a series of high 춨뎣평튻쾵쇐뗄룟뗍싶돥뇭쪾ꆣ and low pulses. DIGITAL-TO-ANALOG, The process of converting a 쫽튻쒣뮻ꎬ digital signal (binary) to a continuously variable (analog) 붫쫽ퟖ탅뫅ꎨ뛾뷸훆ꎩ뮻돉폫풭탅뫅쿠쯆뗄솬탸뿉 signal that is a close approximation of the original 뇤ꎨ쒣쓢ꎩ탅뫅뗄뒦샭맽돌ꆣ signal. DIHEDRAL, The angle between the wing reference 짏랴뷇ꎬ plane and water line. 믺틭믹ힼ쏦폫쮮쿟횮볤뗄볐뷇ꆣ 43TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING DILUTER DEMAND REGULATOR, A component in the 쾡쫍퇵뗷뷚웷ꎬ crew oxygen system which mixes air and oxygen and 볝쪻닕퇵웸쾵춳훐뗄튻룶늿볾ꎬ쯼붫뿕웸뫍퇵웸믬뫏ꎬsupplies constant oxygen pressure even if there are 벴쪹볝쪻닕뮷뺳톹솦룄뇤ꎬ쯼튲쓜쳡릩뫣뚨뗄퇵웸톹솦ꆣ changes in ambient cockpit pressure. DIM, A word value of light. For light control devices - dim 낵ꎬ is the opposite of bright. 튻룶탎죝맢쿟쇁뛈뗄듊ꆣ뛔폚뗆맢뿘훆ힰ훃ꎬ낵뗄랴 틥듊쫇쇁ꆣ DIODE, A device which allows electronic current to flow 뛾벫맜ꎬ in only one direction 횻퓊탭뗧쇷쿲튻룶랽쿲쇷뚯뗄뗧ퟓힰ훃ꆣ DIPSTICK, A calibrated rod or stick for measuring a 솿돟ꎬ quantity of fluid in a reservoir. 킣ힼ맽뗄냴믲돟ꎬ폃폚닢뚨탮튺웷쓚튺쳥뗄솿ꆣ DIRECT, Straight line flight between two navigational 횱량ꎬ aids, fixes, points or any combination thereof. When 솽룶떼몽첨ꎬ뚨캻뗣ꎬ떼몽뗣ꎬ믲죎뫎뗄ퟩ뫏횮볤뗄횱used by pilots in describing off-airway routes, points 쿟량탐ꆣ퓚놻량탐풱폃폚쏨쫶욫훃몽슷쪱ꎬ돽쇋퓚샗듯뿘defining direct route segments become compulsory 훆뗄쟩뿶쿂ꎬ좷뚨횱쿟몽뛎뗄떼몽뗣돉캪뇘놨뗣ꆣ reporting points unless the aircraft is under radar control. 44TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING DIRECT MEMORY ADDRESSING, Data transfer within 횱뷓듦뒢웷톰횷ꎬ a computer directly with the memory without central 늻춨맽훐퇫뒦샭웷ꎬ볆쯣믺쫽뻝폫볇틤뗄횱뷓뒫쫤ꆣ processing unit intervention. DISARM, A component when disarmed is not ready to 뷢돽풤캻ꎬ operate. 뷢돽풤캻뫳뗄늿볾ꎬ늻쓜솢벴뾪쪼릤ퟷꆣ DISK VALVE (OBSOLETE TERM - BUTTERFLY 엌쪽믮쏅ꎬꎨ샏쪽뷐램ꎺ뗻탎믮쏅ꎩꎬ VALVE), An actuator-operated, rotating device in a duct 샻폃ퟷ뚯볲뷸탐닙ퟷꎬ낲ힰ퓚맜뗀짏뗄탽ힰ훃ꆣ폃살for closing and opening the duct passage. 뿘훆맜뗀뗄춨뛏ꆣ DISPATCH DEVIATION, Variation from certified 좱볾럅탐탎첬뇤뚯ꎬ configuration which is authorized by MEL or CDL to 듓ퟮ뗍짨놸쟥떥뫍좱볾떥ힼ탭뗄량믺낲좫닙ퟝ탎첬뗄permit continued safe operation of airplane. This 욫닮ꆣ룃욫닮춨뎣쫊폃폚늻릤ퟷ뗄쾵춳믲늿볾ꆣ generally applies to an inoperative system or component. DISPATCH DEVIATIONS PROCEDURES GUIDE 좱볾럅량돌탲횸쓏ꎬ (DDPG), A Boeing document that combines Minimum ퟛ뫏ퟮ뗍짨놸쟥떥뫍좱볾떥ꎬ늨틴릫쮾닎뾼컄볾횼퓚붨Equipment List (MEL) and Configuration Deviation List 틩쒳킩량믺늿볾늻릤ퟷ믲좱쪧쪱ꎬ럅량탨튪뗄돌탲ꆣ (CDL) items into one reference book. Gives required procedures for dispatching aircraft with certain parts inoperative or missing. 45TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING DISPLACE THRESHOLD, A threshold not located at 틆뚯엜뗀죋뿚ꎬ the extremity of a runway. 늻퓚엜뗀ퟮ뚥뛋뗄엜뗀춷ꆣ DISTANCE MEASURING EQUIPMENT (DME), A radio 닢뻠믺ꎨDMEꎩꎬ navigational aid for determining the distance from a 량믺짏뗄튻훖컞쿟뗧떼몽짨놸ꎬ춨맽닢솿뗧늨췹략량 selected DME ground station by measuring the time of 믺뫍풤톡뗘쏦ꎨDMEꎩ첨횮볤쯹탨튪뗄쪱볤살좷뚨솽헟볤transmission to and from it. 뗄뻠샫ꆣ DIVERSION, The process of flying to an airport not in 룄몽ꎬ the flight plan. 량췹늻퓚량탐볆뮮훐뗄믺뎡뗄맽돌ꆣ DMA, SEE - DIRECT MEMORY ADDRESSING 횱뷓듦뒢웷톰횷ꎬ 볻 Direct Memory Addressingꎮ DME FIX, A geographical position determined by 닢뻠틇뚨캻뗣ꎬ reference to a navigational aid which provides distance 쿠뛔폚쳡릩뻠샫뫍랽캻뗄떼몽첨뛸뻶뚨뗄뗘샭캻훃ꆣ and azimuth information. It is defined by a specific 쯼평틔몣샯캪떥캻뗄튻뚨뻠샫뫍틔뻠첨듅뛈캪떥캻뗄뺶distance in nautical miles and a radial or course (., 쿲쿟믲몽뗀살뚨틥ꆣ localizer) in degrees magnetic from that aid. DOCK, A closed-in or protected area reserved for 볬탞믺뿢ꎬ aircraft repairs. Less structured than a hangar. 튻룶헚뇎믲쫜놣뮤뗄쟸폲ꎬ폃폚량믺캬탞ꆣ뷡릹뇈 량믺뿢볲떥ꆣ 46TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING DORSAL FIN, A vertical surface forward of the vertical 벹ꎬ stabilizer (fin). 뒹횱낲뚨쏦잰뇟뗄튻룶뒹횱쏦ꆣ DOME LIGHT, A part spherical light assembly for 닕뚥뗆ꎬ control cabin illumination. 릩볝쪻닕헕쏷뿘훆폃뗄쟲탎뗆ퟩ볾ꆣ DOMESTIC RESERVES, Reserves required by a local 맺쓚몽쿟놸폃폍솿ꎬ governing agency when the flight plan route falls within 떱뗘맜샭믺릹뛔폚퓚룃맺뺳쓚뗄량탐볆뮮몽쿟좼폍뒢 the borders of a country. 놸쯹튪쟳뗄놸폃좼폍ꆣ DOWNLOAD, To transfer data from a computer to a 퓘ꎬ connected device. 붫쫽뻝듓볆쯣믺뒫쯍떽폫웤쿠솬뗄짨놸뗄맽돌ꆣ DOWNLOCK, A mechanism on the landing gear for 쿂캻쯸ꎬ keeping the landing gear in the extended position. 웰실볜짏뗄튻룶믺릹ꎬ폃폚붫웰실볜놣돖퓚럅쿂캻훃ꎮ DOWN TRACK FIX (DNTKFX), A navigational position 몽쿟잰랽뚨캻뗣ꎬ established ahead of the airplane along the flight plan 퓚량탐볆뮮몽쿟짏잰랽틑뺭좷솢뗄떼몽뗣ꆣ route. 47TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING DRAG, The aerodynamic related force on an aircraft ퟨ솦ꎬ during flight acting in the direction opposite aircraft 량탐쪱ퟷ폃퓚량믺짏뗄튻훖웸뚯솦ꎬ웤랽쿲폫량믺퓋 motion. 뚯랽쿲쿠랴ꆣ DRAG BRACE, A component on the main landing gear ퟨ솦독룋ꎬ for support of the shock strut. 훷웰실볜짏폃틔횧돖복헰횧훹뗄늿볾ꆣ DRAG STRUT, A component on the nose or main ퟨ솦독룋훹ꎬ landing gear for support of the shock strut. 잰믲훷웰실볜짏폃틔횧돖복헰횧훹뗄늿볾ꆣ DRAIN VALVE, A valve for removing fluid from a 럅킹믮쏅ꎬ reservoir. 듓훼듦쿤췹췢업럅튺쳥뗄믮쏅ꆣ 48TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING DRAWING, Information presented in a graphic form. 춼ꎬ 폃춼뷢탎쪽햹쪾뗄쫽뻝쇏ꆣ DRIFT ANGLE, An angle computed by subtracting the 욫쇷뷇ꎬ airplane heading from the airplane track. 량믺뗄몽쿲폫량믺뗄몽벣뗄닮뷇ꆣ DRIFTDOWN, The loss of aircraft altitude caused by the 욮붵ꎬ loss of power in one or more engines and the inability of 평폚튻첨믲쫽첨랢뚯믺쪧좥췆솦ꎬ량믺늻쓜놣돖쿖쪱 the aircraft to maintain current altitude and speed. 룟뛈뫍쯙뛈뛸떼훂뗄량믺뗴룟뛈ꆣ DIPSTICK, A component located in the bottom skin of 솿폍돟ꎬ the fuel tank for measuring fuel quantity in the airplane 캻폚량믺좼폍쿤뗗늿뗄쏉욤쓚ꎬ폃틔솿좡좼폍폍솿뗄 tank. 늿볾ꆣ DUTCH ROLL, An airplane movement about the 뫉삼맶ꎨ욮냚ꎩꎬ longitudinal axis, characterized by a roll in one direction, 쫇량믺캧죆ퟝ훡맶뗄튻훖퓋뚯ꎬ쳘뗣쫇쿲튻룶랽쿲맶and a yaw in the opposite direction. ꎬ쿲랴랽쿲ퟶ욫몽퓋뚯ꆣ DYNAMIC DATA, Data shown on the EFIS that is 뚯첬쫽뻝ꎬ frequently updated, for example, present position. 뗧ퟓ량탐틇뇭쾵춳쯹쿔쪾뗄쪱뎣룼탂뗄쫽뻝ꆣ샽죧ꎺ 떱잰캻훃ꆣ 49TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING DYNAMOMETER, A mechanical device used to 닢솦볆ꎬ measure power, force or torque. 튻룶믺킵ힰ훃ꎬ폃폚닢솿릦싊ꎬ솦ꎬ뫍얤뻘솦ꆣ DZUS FASTENER, A type of cowling or panel fastener, 훬쮹뿬킶쯸뿛ꎬ where a slotted stud is rotated over a spring steel wire to 튻훖폃폚랢뚯믺헻쇷헖믲쏦냥뗄쯸뿛ꆣ쯸뿛짏뾪폐튻룶lock in a cam-like groove. 킱닛뗄뛋훡퓚튻룹떯믉룖쮿짏뚯ꎬ틔쪹룖쮿쯸죋뛋훡뗄 킱닛훐ꆣ E EADI, SEE - ELECTRONIC ATTITUDE DIRECTOR 뗧ퟓퟋ첬횸틽틇ꎬ INDICATOR 볻 Electronic Attitude Director Indicatorꎮ ECON SPEED, The most cost efficient operating speed 뺭볃쯙뛈ꎬ when all operating costs are considered. 퓚붫쯹폐뗄량믺닙ퟷ럑폃뚼쇐죋뾼싇뫳쯹뚨돶살뗄돉 놾킧틦ퟮ룟뗄량탐쯙뛈ꆣ EFIS, SEE - ELECTRONIC FLIGHT INSTRUMENT 뗧ퟓ량탐틇뇭쾵춳ꎬ SYSTEM 볻 Electronic Flight Instrument Systemꎮ EGT, SEE - EXHAUST GAS TEMPERATURE 업웸컂뛈ꎬ 볻Exhaust Gas Temperatureꎮ EHSI, SEE - ELECTRONIC HORIZONTAL SITUATION 뗧ퟓ쮮욽캻훃횸쪾웷ꎬ INDICATOR 볻 Electronic Horizontal Situation Indicator.폐쪱 돆ퟷHSIꎮ 50TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING EICAS, SEE - ENGINE INDICATING AND CREW 랢뚯믺횸쪾뫍믺ퟩ뺯룦쾵춳ꎬ ALERTING SYSTEM 볻 Engine Indicating and Crew Alerting Systemꎮ EJECTOR, A specially shaped outlet at the end of a 틽짤뿚ꎬ duct. 캻폚떼맜쒩뛋ꎬ탎ힴ쳘쫢뗄돶뿚ꆣ ELECTRICAL FUSE, A safety device consisting of a 뗧죛쮿ꎬ wire of low-melting-point-metal. When current passing 튻룶평뗍죚뗣뷰쫴쮿ퟩ돉뗄낲좫ힰ훃ꆣ떱룟폚낲좫횵뗄through the wire exceeds a safe level, the resulting heat 뗧쇷쇷맽뷰쫴쮿쪱ꎬ틲듋닺짺뗄죈솿죚뛏뷰쫴쮿ꎬ뛏뾪뗧melts the wire and opens the circuit, protecting the 슷ꎬ틔놣뮤짨놸쏢폚쯰뮵ꆣ equipment from damage. ELECTRONIC ATTITUDE DIRECTOR INDICATOR 뗧ퟓퟋ첬횸틽틇ꎨADI or EADIꎩꎬ (ADI or EADI), An EFIS display showing the airplane's 튻훖뗧ퟓ량탐틇뇭쾵춳쿔쪾ꎬ쿔쪾량믺뗄ퟋ첬ꎬ량탐랽attitude, flight mode annunciations, flight director 쪽쿔쪾ꎬ량탐횸틽횸쇮뫍웤쯼떼몽탅쾢ꆣ commands, and other navigational information. ELECTRONIC FLIGHT INSTRUMENT SYSTEM (EFIS), 뗧ퟓ량탐틇뇭쾵춳ꎨEFISꎩ, An airplane display system using cathode ray tubes 량믺뗄튻훖틵벫짤쿟맜믲튺뺧쿔쪾쾵춳ꆣ폃살쿔쪾떼몽(CRT) to show navigational and autoflight information. 뫍ퟔ뚯량탐탅쾢ꆣ ELECTRONIC HORIZONTAL SITUATION INDICATOR 뗧ퟓ쮮욽ힴ첬횸쪾웷ꎨEHSI or HSIꎩꎬ (EHSI or HSI), An EFIS display showing navigational 튻훖뗧ퟓ량탐틇뇭쾵춳쿔쪾ꆣ폃살쿔쪾떼몽탅쾢ꆣ information. ELECTROSTATIC DISCHARGE SENSITIVE DEVICES, 뺲뗧럅뗧쏴룐풪볾ꎬ A device which may be damaged by unwanted 튻훖믡놻늻쾣췻폐뗄뺲뗧럅뗧쯹쯰뮵뗄웷볾ꆣ discharges of static electricity. 51TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING ELEVATOR, A hinged moveable part on the trailing 짽붵뛦ꎬ edge of the horizontal stabilizer for airplane pitch (nose 뷂솬퓚쮮욽낲뚨쏦뫳풵짏뗄뿉뚯늿볾ꆣ폃틔닙ퟝ량믺 up and nose down) control. 뗄뢩퇶퓋뚯ꎨ믺춷뎯짏벰뎯쿂ꎩꆣ EMPENNAGE, The rear portion of an airplane 캲틭ꎬ consisting of fuselage, horizontal stabilizer and vertical 량믺뗄뫳늿ꎬ냼삨믺짭ꎬ쮮욽낲뚨쏦뫍뒹횱낲뚨쏦ꆣ stabilizer. ENERGIZE, To turn on or cause to operate. 춨뗧ꎬ 뷓춨믲쪹릤ퟷꆣ ENGINE BLEED AIR, Air taken from the engine to 랢뚯믺틽웸ꎬ power various aircraft accessories. 좡ퟔ랢뚯믺뗄뿕웸ꎬ폃틔쟽뚯룷훖량믺뢨훺ힰ훃ꆣ ENGINE INDICATING AND CREW ALERTING 랢뚯믺횸쪾뫍믺ퟩ뺯룦쾵춳ꎨEICASꎩꎬ SYSTEM (EICAS), A system which provides full time 튻룶틔퇴벫짤쿟맜캪쿔쪾웷ꎨ믲튺뺧쿔쪾웷ꎩ살좫쪱볠monitoring of airplane systems and engine performance 뿘량믺쾵춳폫랢뚯믺탔쓜뗄쾵춳ꆣ displayed on a CRT. 52TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING ENGINE PRESSURE RATIO (EPR), The ratio of inlet 랢뚯믺톹솦뇈ꎨEPRꎩꎬ pressure over exhaust pressure measurements. The 뷸웸톹솦폫업웸톹솦횵뗄뇈ꎬ쒳킩랢뚯믺틔듋ퟷ캪짨 ratio is used as the primary parameter to set thrust on 뚨췆솦뗄훷튪틀뻝ꆣ some engines. ENROUTE FUEL PLANNING, Determining the amount 몽슷좼폍볆뮮ꎬ of fuel required to complete the remainder of a flight 퓚량탐춾훐ꎬ뻶뚨량췪폠쿂몽뛎쯹탨횮좼폍솿ꆣ segment while airborne. EPR, SEE - ENGINE PRESSURE RATIO 랢뚯믺톹솦뇈ꎬ 볻 Engine Pressure Ratio. EQUALIZATION, The use of a circuit to make the 뗈춬ꎬ outputs of two or more devices to be the same value. 퓋폃튻룶뗧슷쪹솽룶믲솽룶틔짏뗄ힰ훃뗄쫤돶횵쿠뗈ꆣ 53TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING EQUIPMENT CENTER, A compartment in the fuselage 짨놸훐탄 for storage of modules. 믺짭쓚폃틔훼듦룷훖ퟩ볾뗄튻룶닕ꆣ ESDS, SEE - ELECTROSTATIC DISCHARGE 뺲뗧럅뗧쏴룐볾ꎬ SENSITIVE DEVICES 볻 Electrostatic Discharge Sensitive Devicesꎮ ESTIMATED TIME OF ARRIVAL, For IFR flights, the 풤볆떽듯쪱볤ꎬ time at which it is estimated that the aircraft will arrive 뛔폚쪹폃틇뇭량탐맦퓲뗄몽냠ꎬ쫇량믺떽듯횸뚨뗣짏뿕over that designated point, defined by reference to 뗄맀볆쪱볤ꆣ쯼평닎헕틇뇭뷸뷼돌탲웰쪼떼몽첨뛸뻶뚨ꆣnavigation aids from which it is intended that an 죴믺뎡쎻폐쿠펦떼몽짨놸ꎬ퓲쫇량믺떽듯믺뎡짏뿕뗄쪱instrument approach procedure will be commenced,or, if 볤ꆣ뛔폚틔쒿쫓량탐맦퓲량탐뗄량믺ꎬ쫇량믺붫떽듯믺뎡no navigation aid is associated with the aerodrome, the 짏뿕뗄맀볆쪱볤ꆣ time at which the aircraft will arrive over the aerodrome. For VFR flights, the time at which it is estimated that the aircraft will arrive over the aerodrome. EUTECTIC SOLDER, An alloy with very low melting 틗죛몸쇏ꎬ point which permits automatic fire extinguisher 튻훖뗍죛뗣뗄뫏뷰ꎬ뿉쪹닞쯹쓚뗄쏰믰웷폶믰쪱ퟔ뚯 discharge in the lavatory. 웴폃ꆣ EVAPORATION, The changing of a solid or liquid into a 헴랢ꎬ vapor. A thermal caused activity. 평폚컂뛈뗄룄뇤쪹만쳥믲튺쳥믓랢뛸뇤돉헴웻뗄맽돌ꆣ EXCEEDANCE, Any condition that occurs when a 뎬횵ꎬ system goes beyond its operating limits. 떱튻룶쾵춳뎬돶닙ퟷ벫쿞쪱돶쿖뗄쟩뿶ꆣ EXCITATION, Supply of electric current to the field 샸듅ꎬ windings of a generator to produce a magnetic field. 릩뗧룸랢뗧믺뗄듅뎡죆ퟩ틔닺짺튻룶듅뎡ꆣ 54TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING EXHAUST GAS TEMPERATURE, The temperature of 업웸컂뛈ꎬ the engine exhaust measured by thermocouples and 랢뚯믺업돶웸쳥횮컂뛈ꆣ평죈뗧얼솿돶볠뿘랢뚯믺헽뎣displayed by an indicator for monitoring correct engine 릤ퟷ뗄틇뇭횸쪾ꆣ operation. EXTRUSION, A metal unit that has been forced through 톹훆욷ꎬ a shaping die while it is in a thermal plastic state. 퓚죈쯜ힴ첬쿂ꎬ뺭볓톹춨맽톹쒣뛸훆돉뗄뷰쫴볾ꆣ EYE REFERENCE POSITION (ERP), The optimum 쒿쫓닎뾼캻훃ꎨERPꎩꎬ pilot head position to see the airplane instruments. 량탐풱맛달량믺틇뇭뗄춷늿ퟮ병캻훃ꆣ평뗷헻ퟹ틎살듯Accomplished by adjusting the seat. 떽ꆣ F FAHRENHEIT, The unit of temperature measurement in 뮪쫏뛈ꎬ which 32 indicates the freezing point of water and 212 컂뛈뗄뛈솿떥캻ꆣ32°F뇭쪾쮮뗄뇹뗣ꎬ212°F뇭쪾쮮뗄indicates the boiling point. 럐뗣ꆣ FAIL OPERATIONAL, A system with enough 듸맊헏릤ퟷꎬ redundancy that a single failure leaves the system fully 튻룶뻟폐ퟣ릻죟폠뛈뗄쾵춳ꎬ벴쪹튻룶맊헏뗄랢짺ꎬ죔operational. 좻쓜놣돖쾵춳췪좫헽뎣뗄닙ퟷꆣ FAIL PASSIVE, A system which is designed to be not 맊헏쿻벫럀뮤ꎬ operational for a single failure. 튻룶내헕짨볆튻폐맊헏랢짺ꎬ뻍늻릤ퟷ뗄쾵춳ꆣ 55TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING FAIRING, A covering over structure providing a smooth 헻쇷ힰ훃ꎬ surface for airflow. 룸웸쇷쳡릩맢뮬뇭쏦틔복짙ퟨ솦뗄뢲룇탔릹볾ꆣ FAN (NO. 1), A rotating part of an engine, driven by the 럧질ꎨNOꎮ1ꎩꎬ low pressure turbine, for air supply to the engine and to 랢뚯믺뗄튻룶뚯볾ꆣ평뗍톹컐싖쟽뚯ꎬ폃폚룸랢뚯믺the duct around the front part of the engine. The fan 뫍벰웤잰늿맜뗀릩웸ꆣ랢뚯믺췆솦뗄듳늿럝살ퟔ럧질ꆣ provides the major portion of engine thrust. FAN (NO. 2), A device consisting of one or more 럧질ꎨNQꎮ2ꎩꎬ revolving blades attached to a rotary hub and operated 낲ힰ퓚평십듯쟽뚯뗄탽싖뿇짏뗄튻욬믲뛠욬탽붰by a motor. Fans are usually used to provide cooling or 튶쯹ퟩ돉뗄ힰ훃ꆣ춨뎣폃살쳡릩샤좴믲뿕웸톭뮷ꆣ air circulation. FAN AIR, The portion of airflow through a turbofan 럧질웸쇷ꎬ engine which passes only through the fan. 퓚컐싖럧질랢뚯믺훐ꎬ뷶뷶춨맽럧질뗄쓇늿럖웸쇷ꆣ 56TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING FAN COWL, A covering around the fan section of the 럧질헻쇷헖ꎬ engine that can be opened for access to the 퓚랢뚯믺럧질훜캧뗄뿉킶룇뿇ꎬ듲뾪뫳뿉틔릻떽랢뚯 components on the engine. 믺늿볾ꆣ FASTENER, A mechanical device such as a bolt, nail, 뷴만볾ꎬ rivet or screw that is used to tie two objects together. 폃살붫솽룶컯쳥솬뷓웰살뗄믺킵ힰ훃ꆣ죧식쮨ꎬ뚤ퟓꎬ 쎭뚤ꎬ믲식뚤ꆣ FATIGUE OR FATIGUE FAILURE, The failure of a 욣샍믲욣샍뛏쇑ꎬ material because of bending, flexing or severe vibration 틲췤쟺믲뻧쇒헱뚯솦쯹퓬돉뗄닄쇏뛏쇑ꆣ forces. FAULT ISOLATION MANUAL (FIM), A manual which 맊헏룴샫쫖닡ꎨFIMꎩꎬ contains procedures for isolating and correcting 쓚몬룴샫늢업돽량믺맊헏돌탲뗄쫖닡ꆣ릩몽뿕릫쮾캬탞reported airplane faults. Used by airline mechanics. 믺킵풱쪹폃ꆣ FAULT REPORTING MANUAL (FRM), A manual used 맊헏놨룦쫖닡ꎨFRMꎩꎬ by flight crews to aid in reporting airplane system 믺ퟩ쪹폃뗄튻놾쫖닡ꆣ폃틔냯훺쯻쏇놨룦량믺쾵춳뗄맊malfunctions. 헏ꆣ 57TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING FAYING SURFACE, The overlapping area of adjoining 뷓뫏쏦ꎬ surfaces. 쇚뷓뇭쏦뗄훘뗾쟸폲ꆣ FEEDBACK, A part of an output signal which returns to 랴삡ꎬ the input for control or indication. 쫤돶탅뫅뗄튻늿럝ꎬ믘떽쫤죋ퟷ캪뿘훆믲횸쪾횮폃ꆣ FEEDER FIX, The fix depicted on Instrument Approach 횧쿟뚨캻뗣ꎬ Procedure Charts which establishes the starting point of 쫇퓚틇뇭뷸뷼돌탲춼짏뗄뚨캻뗣ꆣ룃뚨캻뗣붨솢횧쿟뗄the feeder route. 웰쪼뗣ꆣ FEEL COMPUTER, A mechanical device sensing 룐뻵볆쯣믺ꎬ airplane speed for supplying variable pressure input to 캪쿲짽붵뛦뿘훆쾵춳쫤죋뿉뇤톹솦뛸룐펦량믺쯙뛈뗄the elevator control system. 믺킵ힰ훃ꆣ FERRY FLIGHT, Flying an airplane not suitable for 퓋뛉량탐ꎬ revenue (passenger) operations to an airport where 붫튻볜늻쫊뫏펪퓋ꎨ듸뿍ꎩ량탐뗄량믺ꎬ량떽튻룶뿉틔repairs can be made. 캬탞뗄믺뎡좥ꆣ FIBERGLASS, A material made from glass fibers and 늣솧룖ꎬ used for aerodynamic fairings and access panels. 평늣솧쿋캬훆돉뗄튻훖닄쇏ꆣ폃폚헻쇷헖뫍룷훖닕룇ꆣ FIELD LENGTH LIMIT WEIGHT, Maximum takeoff 뎡뎤벫쿞훘솿ꎬ gross weight based on runway length, slope, wind, and 평엜뗀뗄뎤뛈ꎬ웂뛈ꎬ럧뫍컂뛈뻶뚨뗄ퟮ듳웰량ퟜ훘ꆣ temperature. FILIFORM CORROSION, Thread or string-like 쿟ힴ뢯쪴ꎬ corrosion paths forming on aluminum structures usually 퓚싁릹볾짏탎돉뗄식컆믲쳵컆퇹뗄뢯쪴뫛벣ꆣ춨뎣돶 under painted layers. 쿖폚폍웡닣쿂ꆣ 58TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING FIM, SEE - FAULT ISOLATION MANUAL 맊헏룴샫쫖닡ꎬ 볻Fault Isolation Manualꎮ FIN, SEE - VERTICAL STABILIZER 뒹캲ꎬ 볻 Vertical Stabilizer FINAL APPROACH COURSE, A straight line extension ퟮ뫳뷸뷼몽뗀ꎬ of a localizer, a final approach radial/bearing, or a 튻룶ퟅ슽몽쿲탅뇪뗄횱쿟퇓뎤쿟ꎬ튻쳵ퟮ뫳뷸뷼뺶쿲ꎯrunway centerline, all without regard to distance. 랽캻쿟ꎬ믲튻쳵엜뗀훐탄쿟ꎬ뻹폫뻠샫컞맘ꆣ FINAL APPROACH FIX, The fix from which the final ퟮ뫳뷸뷼뚨캻뗣ꎬ approach (IFR) to an airport is executed and which 쿲믺뎡ퟷퟮ뫳뷸뷼틇뇭량탐맦퓲뗄뚨캻뗣ꎬ튲쫇ퟮ뫳뷸identifies the beginning of the final approach segment. 뷼뾪쪼뗄뇪횾ꆣ퓚 Jeppesen Terminal charts뗄웊쏦춼It is designated in the profile view of Jeppesen Terminal 짏ꎬ럇뺫쏜뷸뷼폃쪮ퟖ싖럻뫅뇭쪾ꎬ뺫쏜뷸뷼폃쿂뮬뗀ꎯcharts by the Maltese Cross symbol for nonprecision 몽뗀쟐죋뗣뇭쪾ꆣ쿂뮬뗀ꎯ몽뗀럻뫅쪼폚FAFꆣ떱ATC횸approaches and by the glide slope/path intercept point 틽튻쳵뗍폚릫늼뗄쿂뮬뗀ꎯ몽뗀쟐죋룟뛈쪱ꎬFAF쫇평듋on precision approaches. The glide slope/path symbol 뗃떽뗄쿂뮬뗀ꎯ몽뗀뗄쪵볊뗣ꆣ starts at the FAF When ATC directs a lower-than published Glide slope/path Intercept Altitude, it is the resultant actual point of the glide slope/path intercept. FINAL APPROACH, That part of an instrument ퟮ뫳뷸뷼ꎬ approach procedure which commences at the specified 쫇틇뇭뷸뷼돌탲뗄튻늿럖ꎬ쪼폚횸뚨뗄ퟮ뫳뷸뷼뚨캻뗣final approach fix or point, or where such a fix or point is 믲ퟮ뫳뷸뷼뗣ꎬ믲헟캴볓횸뚨뗄튻룶뚨캻뗣ꆣ not specified. FIRE WALL, A fireproof partition or bulkhead between 럀믰잽ꎬ the engine and the airplane structure. 캻폚랢뚯믺폫량믺뷡릹횮볤뗄쓍믰룴냥ꆣ FIX, A geographical position determined by visual 뚨캻뗣ꎬ reference to the surface, by reference to one or more 평쿠뛔폚뇭쏦뗄쒿쫓닎뾼뻶뚨뗄뗘샭캻훃ꎬ튲뿉틔평닎radio NAVAIDs, by celestial plotting, or by another 헕튻룶믲뛠룶떼몽첨ꎬ쳬컄떼몽ꎬ믲웤쯻떼몽ힰ훃살뻶뚨ꆣ navigational device. 59TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING FIXED BASE SIMULATION (FBS), A flight training 만뚨쒣쓢믺ꎨFBSꎩꎬ device that is identical to the FFS except there is no 돽쇋쎻폐쫓뺰뫍뚯룐횮췢ꎬ웤쯻쳘뗣폫좫뚯쒣쓢믺쿠춬visual or motion system. 뗄량탐통솷짨놸ꆣ FLAG (NO. 1), A failure indication on a display. 맊헏웬ꎬ 퓚쿔쪾웷짏뗄맊헏횸쪾ꆣ FLAG (NO. 2), In a computer, an indication that a 뇪횾ꎬ particular operation has been completed. 퓚볆쯣믺훐쒳튻룶닙ퟷ돌탲췪돉뗄횸쪾ꆣ FLAME ARRESTOR, A device in the fuel system vent 믰퇦ퟨ횹웷ꎬ lines for preventing a flame from outside entering the 좼폍쾵춳춨웸맜쓚뗄튻룶ힰ훃ꆣ폃폚럀횹믰퇦듓췢늿 tank. 뷸죋폍쿤ꆣ FLANGE, A projection on the engine for attachment of 랢뚯믺램삼엌ꎬ components on the engine. 랢뚯믺짏폃살솬뷓늿볾뗄춹풵ꆣ 60TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING FLAP (LEADING EDGE), A hinged moveable part on 뷳틭ꎨ잰풵ꎩꎬ the underside of the leading edge of the wing for 뷂솬퓚믺틭잰풵쿂뇭쏦뗄뿉뚯늿볾ꎬ퓚량믺뗍쯙량탐쪱increasing lift at low airplane speed. 퓶볓짽솦ꆣ FLAP (TRAILING EDGE), A movable part on the trailing 뷳틭ꎨ뫳풵ꎩꎬ edge of the wing used for increasing lift at low airplane 믺틭뫳풵뗄뿉뚯늿럝ꆣ퓚량믺뗍쯙량탐쪱퓶볓짽솦ꆣ뫳speed. Flaps may be triple-slotted. 풵뷳틭뿉뛠훁죽욬ꎬ쎿욬횮볤폐러ꆣ FLAP LOAD LIMITER, An electro-mechanical 뷳틭퓘뫉쿞훆웷ꎬ component for preventing further flap extension during 폃살럀횹뷳틭퓚량믺쯙뛈맽룟쪱맽뛈짬돶뗄믺뗧ힰ훃ꆣ periods of excessive airplane speed. FLAP RETRACTION ALTITUDE, An altitude selected 쫕뷳틭룟뛈ꎬ for acceleration and retraction of flaps. 캪량믺볓쯙벰뷳틭쫕믘뛸톡뗄룟뛈ꆣ FLAP SETTING, The selected position of the aircraft 뷳틭캻훃짨뚨ꎬ flaps and other related high lift devices. 량믺뷳틭뫍웤쯻폐맘퓶짽ힰ훃뗄톡뚨캻훃ꆣ 61TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING FLAP SPEED SCHEDULE, Provides recommended 뷳틭쯙뛈볆뮮ꎬ maneuvering speeds for various flap settings. The flap 쳡릩룷룶뷳틭캻훃뗄췆볶믺뚯량탐쯙뛈ꎬ듋볆뮮틔VREFspeed schedule is based on additives to VREF. 볓퓶솿캪믹ힼꆣ FLARE, A maneuver to transition the airplane from 삭욽ꎬ approach to touchdown on the runway. 튻훖붫량믺듓뷸뷼맽뛉떽퓚엜뗀짏뷓뗘뗄믺뚯뚯ퟷꆣ FLIGHT CONTROLS, Hinged moveable surfaces on the 량탐닙ퟝ쏦ꎬ wings, horizontal stabilizer and vertical stabilizer for 뷂솬퓚믺틭ꎬ쮮욽캲틭뫍뒹횱캲틭짏뗄뿉뚯쏦ꎬ폃살 airplane control during flight and high speed ground 퓚량믺량탐쪱뫍룟쯙뗘쏦닙ퟷ쪱ꎬ뿘훆량믺ꆣ operations. FLIGHT DECK EFFECTS, Indications on the flight deck 볝쪻닕킧펦ꎬ caused by a system's malfunction. 틲쾵춳맊헏뛸퓚볝쪻닕훐돶쿖뗄횸쪾ꆣ FLIGHT DIRECTOR, A system or portion of a system 량탐횸틽틇ꎬ which presents commands to the flight crew for control 캪믺ퟩ쳡릩뿘훆뫍틽떼량탐폃뗄횸쇮뗄쾵춳ꎬ믲룃쾵춳and guidance of the flight of an airplane. 횮튻늿럝ꆣ 62TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING FLIGHT DIRECTOR POP-UP (FDS), The automatic 량탐횸틽틇ퟔ뚯쿔쪾ꎨFDSꎩꎬ display of flight director commands with flight director 떱량탐횸틽틇뗄뾪맘뒦폚맘뛏뗄캻훃쪱ꎬퟔ뚯쿔쪾뗄량switches in off position. 탐횸쇮ꆣ FLIGHT INFORMATION REGION (FIR,UIR), An 량몽쟩놨쟸ꎨFIRꎬUIRꎩꎬ airspace of defined dimensions within which Flight 튻룶폐량탐쇏럾컱뫍뺯룦럾컱뗄랶캧쿞뚨뗄뿕폲ꆣ Information Service and Alerting Service are provided. FLIGHT LEVEL (FL), A level of constant atmospheric 룟뛈닣ꎨFLꎩꎬ pressure related to a reference datum of inches of 쿠뛔폚펢듧릯훹닎뾼쫽뻝뗄웸톹뫣뚨뗄룟뛈닣ꆣmercury. Each is stated in three digits that represents 쎿닣뻹틔죽캻쫽뇭쪾ꎬ튻냙펢돟캪떥캻ꆣ죧 FL 250뇭쪾hundreds of feet. For example, flight level 250 톹솦룟뛈캪 25000펢돟ꆣ represents a pressure altitude of 25,000 feet. FLIGHT MANAGEMENT COMPUTER (FMC), An 량탐맜샭볆쯣믺ꎨFMCꎩꎬ airplane computer used for navigational, guidance, and 폃폚떼몽ꎬ횸틽ꎬ뫍탔쓜볆쯣뗄량믺볆쯣믺ꆣ performance computations. FLIGHT MODE ANNUNCIATOR, A display or part of a 량탐랽쪽탅뫅없ꎬ display that shows the autoflight mode of operation. 쿔쪾ퟔ뚯량탐랽쪽뗄쿔쪾믲늿럝쿔쪾ꆣ FLIGHT PLAN, Specified information relating to the 량탐볆뮮ꎬ intended flight of an aircraft, field orally or in writing with 쿲뿕훐붻춨맜훆ퟷ뗄뿚춷믲쫩쏦놨룦ꆣ쓚몬폫몽냠폐맘an ATC facility. 뗄쿪쾸쇏ꆣ FLIGHT PROFILE, A description of the flight which 량탐웊쏦ꎬ specifies the climb, cruise and descent altitudes and 뛔튻룶몽냠뗄쏨쫶ꆣ쿪쾸횸쏷엀짽ꎬ톲몽뫍쿂붵쯹량뗄speeds to be flown. 룟뛈뫍쯙뛈ꆣ 63TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING FLIGHT SPOILER, See Spoiler. 량탐죅쇷냥ꎬ 볻Spoiler. FLOAT SWITCH, An electrical switch which opens or 뢡ퟓ뗧쏅ꎬ closes an electrical circuit depending on fluid quantity in 룹뻝훼튺쿤쓚튺쳥뗄솿살뷓춨믲뛏뾪뗧슷뗄튻훖뗧웷the reservoir. 뾪맘ꆣ FLIGHT TRAINING DEVICE: Any device having a full 량탐엠통짨놸ꎬ scale replace of instruments, flight deck area or an 럂틇뇭ꆢ볝쪻닕쟸ꆢ믲럢뇕볝쪻닕뗄죎뫎짨쪩럂헦ힰ훃ꆣenclosed airplane cockpit includes the equipment and 냼삨뿉쳥쿖량믺뗘쏦뫍뿕훐ힴ첬뗄짨놸뫍돌탲ꆣ programs necessary to represent the airplane in ground and flight conditions. FLOAT VALVE, A valve in a fluid reservoir which opens 뢡ퟓ믮쏅ꎬ and closes an inlet or outlet depending on fluid level. ힰ퓚훼튺쿤쓚ꎬ룹뻝튺쏦뗄룟뗍살뾪웴뫍맘뇕뷸뿚믲돶 뿚뗄믮쏅ꆣ FLOWMETER, An electrical transmitter for measuring 쇷솿뇭ꎬ the fuel flow to the engine. 폃살솿뛈쇷쿲랢뚯믺뗄좼폍쇷싊뗄뗧뒫룐웷ꆣ FLUORESCENT LIGHT, A light emitted by a gas filled 펩맢ꎬ tube. 평튻훖쳘훆뗄돤웸맜쯹랢돶뗄맢ꆣ 64TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING FMC, SEE - FLIGHT MANAGEMENT COMPUTER 량탐맜샭볆쯣믺ꎬ 볻 Flight Management Computer. FOD, SEE - FOREIGN OBJECT DAMAGE 췢살컯쯰뮵, 볻Foreign Object Damageꎮ FORCE BALANCE VALVE, A valve controlled by the 솦욽뫢믮쏅ꎬ feel computer in the elevator system for hydraulic 평짽붵뛦쾵춳쓚뗄룐뻵볆쯣믺뿘훆뗄믮쏅ꎬ폃살쿲짽붵pressure supply to the elevator actuator. 뛦뛦믺쳡릩튺톹솦ꆣ FOREIGN, Offside; opposite side. 췢쏦뗄ꎬ 쇭튻뇟뗄ꎬ뛔쏦뗄ꆣ FOREIGN OBJECT DAMAGE, Internal engine damage 췢살컯쯰뮵ꎬ due to objects entering the engine air inlet. 평뷸죋랢뚯믺뷸웸뿚뗄컯쳥쯹틽웰뗄랢뚯믺쓚늿쯰뮵ꆣ FRM, SEE - FAULT REPORTING MANUAL 맊헏놨룦쫖닡ꎬ 볻Fault Reporting Manualꎮ FUEL CONSERVATION, The activity of planning flight 뷚풼좼폍ꎬ altitudes and cruise speeds so as to minimize fuel 캪쪹좼폍쿻뫄ퟮ짙뛸뛔량탐룟뛈뫍톲몽쯙뛈뗄볆뮮ꆣ consumption. FUEL CONTROL UNIT (FCU), A component on the 좼폍뿘훆ힰ훃ꎨFCUꎩꎬ engine for controlling fuel flow for starting and engine 랢뚯믺짏뗄튻룶늿볾ꆣ퓚랢뚯믺웰뚯뫍퓋쪱뿘훆좼폍operation. 쇷솿ꆣ 65TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING FUEL FLOW, The rate at which an engine consumes 좼폍쇷솿ꎬ fuel measured in units of weight per hour. 랢뚯믺쿻뫄좼폍뗄쯙싊ꆣ틔쎿킡쪱떥캻훘솿뫢솿ꆣ FUEL HEATER, A component on the engine for heating 좼폍볓컂웷ꎬ fuel to prevent icing conditions in the engine fuel 랢뚯믺짏뗄튻룶늿볾ꎬ폃폚볓죈좼폍틔럀횹랢뚯믺좼폍system. 쾵춳뷡뇹ꆣ FUEL JETTISON SYSTEM, A method for reducing 펦벱럅좼폍쾵춳ꎬ airplane weight by discharging fuel from the tanks to the 튻훖춨맽붫폍쿤훐뗄좼폍쿲췢업럅틔복쟡량믺훘솿뗄outside. 랽램ꆣ FULL FLIGHT SIMULATION (FFS): A flight training 좫뚯량탐쒣쓢믺ꎨFFSꎩꎬ device that incorporates full visual and motion systems 튻훖량탐통솷웷ꆣ쯼ퟛ뫏쇋췪헻뗄쫓뺰뫍퓋뚯쾵춳ꎬ틔and specific model airplane. 벰뻟쳥뗄믺탍ꆣ FULL-WAVE RECTIFIER, An electronic circuit which 좫늨헻쇷웷ꎬ changes an alternating current signal into a pulsating 폃살붫붻쇷뗧탅뫅뇤돉싶돥횱쇷뗧탅뫅뗄뗧슷ꆣ direct current signal. G GAGE, A component for showing quantity, pressure, or 볆솿틇ꎬ temperature by a pointer or numeric display. 평횸헫믲쫽ퟖ쿔쪾돶쫽솿ꎬ톹솦믲컂뛈뗄늿볾ꆣ GAGE PRESSURE, Pressure measured in pounds per 뇭톹ꎬ square inch gauge (psig). 떥캻쫇ꎨ쎿욽랽펢듧죴룉냵ꎨpsigꎩ냵ꎯ욽랽펢듧뗄볆 쪾톹솦ꆣ GALVANIC CORROSION, A form of corrosion caused 뗧뷢뢯쪴ꎬ by the contact of dissimilar metals. 튻훖평폚늻춬훖뷰쫴뗄뷓뒥쯹닺짺뗄뢯쪴ꆣ 66TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING GASKET, A seal between two flat surfaces. 쏜럢뗦ꎬ 솽룶욽쏦횮볤뗄쏜럢컯ꆣ GASPER AIR, An individual air supply for each 돋뿍폃뿕웸ꎬ passenger. The air outlets are in the Passenger Service 룸쎿캻돋뿍뗄떥룶뿕웸릩룸ꆣ릩웸뿚ힰ퓚돋뿍럾컱짨놸Units and can be individually controlled for the amount 쓚ꎬ룶뇰뗷뷚릩웸뿚뿉뿘훆뿕웸뗄솿뫍랽쿲ꆣ and direction of supply. GATE (NO. 1), Airport location used for 뗇믺쏅ꎬ loading/unloading passengers. 믺뎡쓚폃폚돋뿍짏쿂량믺뗄춨뗀ꆣ GATE (NO. 2), SEE - LOGIC GATE 싟벭쏅ꎬ 볻Logic Gateꎮ GATE VALVE, An actuator operated, sliding device in a 햢냥믮쏅ꎬ duct for closing and opening the duct passage. 맜뗀훐평ퟷ뚯춲닙ퟝ뗄뮬뚯ힰ훃ꆣ폃살맘뇕뫍듲뾪맜뗀 춨슷ꆣ 67TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING GATEWAY, A functional unit which connects networks 햢쏅ꎬ or systems of different data formats. 튻훖붫쫽뻝룱쪽늻춬뗄췸싧믲쾵춳솪뷓퓚튻웰뗄릦쓜 풪볾ꆣ GEAR DOORS, SEE LANDING GEAR DOORS. 웰실볜닕쏅ꎬ 볻 Landing Gear Doorsꎮ GENERATOR, A mechanically driven device for 랢뗧믺ꎬ producing alternating current for airplane electrical 평믺킵쟽뚯ꎬ캪량믺뗧웷쾵춳닺짺붻쇷뗧뗄ힰ훃ꆣ system. GENERATOR BREAKER(S) (GB), A device which will 랢뗧믺쳸뾪맘ꎨGBꎩꎬ separate an electrical power generator from the 쓜붫랢뗧믺폫평쯼릩뗧뗄믣쇷쳵뛏뾪뗄ힰ훃ꆣ electrical bus(es) it powers. GIMBAL ASSEMBLY, A mechanical component with 췲쿲볜ퟩ볾ꎬ two rings pivoted on axes at right angles to each other 뷳틭뗄짬돶뫍쫕짏쾵춳쓚뗄뻟폐솽룶풲뮷뗄믺킵늿볾ꆣallowing movement in two directions used in the flap 솽룶풲뮷뗄탽훡쿠뮥뒹횱ꎬ틔쪹늿볾퓚솽룶랽쿲뚼쓜extension and retraction system. 뚯ꆣ 68TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING GIRT BAR, A rod attached to the escape slide which 쫸뢿룋ꎬ engages brackets on the floor for automatic slide 솬퓚쳓샫뮬쳝짏뛋뗄룋ퟓꆣ퓚믺닕쏅듲뾪쪱ꎬ폫믺닕뗘operation when the doors are opened. 냥짏횮쯸릳쿠돝뫏ꎬ틔뇣뮬쳝ퟔ뚯릤ퟷꆣ GLIDE SLOPE (GS), A vertical path defined by a 쿂뮬뗀ꎨGSꎩꎬ ground based electronic signal used by an airplane or 평뷸뷼믲ퟅ슽웚볤ꎬ량믺믲량탐풱쪹폃뗄뗘쏦뗧ퟓ탅뫅pilot during approach or landing. 좷솢뗄튻쳵뒹횱쿂뮬몽뗀ꆣ GLIDE SLOPE/GLIDE PATH INTERCEPT ALTITUDE, 쿂뮬뗀ꎯ쿂뮬몽뺶쟐죋룟뛈ꎬ The minimum altitude to intercept the glide slope/path 퓚뺫쏜뷸뷼쪱쟐죋쿂뮬뗀ꎯ쿂뮬몽뺶뗄ퟮ뗍룟뛈ꆣ퓚on a precision approach. The intersection of the Jeppesen믺뎡춼짏릫늼뗄쟐죋룟뛈폫쿂뮬뗀춷뗄붻뷓published intercept altitude with Terminal charts by the 뗣ꆣ쫇뺫쏜ퟮ뫳뷸뷼뚨캻뗣ꆣ떫떱뿕훐붻춨맜훆횸믓튻룶start of the glide slope/path symbol, is the precision FAF; 뷏뗍뗄룟뛈쪱ꎬ평듋닺짺뗄뷏뗍쟐죋캻쫇ퟮ뫳뷸뷼뚨캻however, when ATC directs a lower altitude, the 뗣ꆣ resultant lower intercept position is then the FAR. 69TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING GLOBAL POSITIONING SYSTEM (GPS) (No. 1), A 좫쟲뚨캻쾵춳ꎨGPSꎩꎨNOꎮ1ꎩꎬ space-based radio positioning, navigation, and 평쏀맺맺럀늿퇐훆뗄뿕볤컞쿟뗧뚨캻ꎬ떼몽ꎬ뫍쪱볤틆timetransfer system being developed by . 쾵춳ꆣ룃쾵춳퓚좫쟲솬뷓뗄믹뒡짏ꎬ룸컞쫽놸폐쫊떱짨놸Department of Defense. The system provides highly 폃뮧쳡릩룟뛈ힼ좷뗄캻훃ꆢ쯙뛈ꆢ뫍뺫쏜쪱볤탅쾢ꆣ룃쾵accurate position and velocity information, and precise 춳늻쫜쳬웸뗄펰쿬ꎬ늢쳡릩쫀뷧춨폃탔ퟹ뇪쾵춳ꆣ좫쟲뚨time, on a continuous global basis, to an unlimited 캻쾵춳룅쓮틔쾵춳훐쎿룶컀탇뻟놸쿠뛔폚랢짤컀탇폫폃number of properly equipped users. The system is 뮧횮볤뗄쪱볤뫍뻠샫뗄ힼ좷쟒솬탸뗄뿕볤캻훃탅쾢횮풭unaffected by weather, and provides a worldwide 퓲캪믹뒡ꆣ좫쟲뚨캻쾵춳ퟔ뚯듓쯹볻컀탇톡퓱뫏쫊탅뫅ꎬcommon grid reference system. The GPS concept is 늢붫헢킩탅뫅틫돉죽캬뿕볤캻훃ꆢ쯙싊ꆢ뫍쪱볤ꆣ predicated upon accurate and continuous knowledge of the spatial position of each satellite in the system with respect to time and distance from a transmitting satellite to the user. The GPS receiver automatically selects appropriate signals from the satellite in view and translates these into a three-dimensional position, velocity, and time. GLOBAL POSITIONING SYSTEM (GPS) (No. 2), A 좫쟲뚨캻쾵춳ꎨGPSꎩꎨNOꎮ2ꎩꎬ longrange navigation system that takes navigation input 튻훖쪹폃튻쾵쇐춬늽컀탇쯹랢짤뗄탅뫅ퟷ캪떼몽쫤죋 from transmissions generated by a series of satellites in 뗄뎤뻠샫떼몽쾵춳ꆣ synchronous orbit. GLOBAL NAVIGATION SATELLITE SYSTEMS (GNSS), 좫쟲떼몽컀탇쾵춳ꎨGNSSꎩꎬ An "umbrella" term adopted by the International Civil 쫇맺볊쏱몽ퟩ횯닉폃뗄ꆰ즡탎ꆱ 쫵폯ꆣ쯼냼삨량탐풱Aviation Organization (ICAO) to encompass any 퓚량탐훐룹뻝컀탇쇏ퟶ캻훃에뛏뛸쪹폃뗄죎뫎뛀솢컀independent satellite navigation system used by a pilot 탇떼몽쾵춳ꆣ to perform onboard position determinations from the satellite data. O-AROUND (GA), Airplane maneuver where the pilot is 뢴량ꎨGAꎩꎬ in the final approach phase of flight and decides not to 량탐풱퓚ퟮ뫳뷸뷼뷗뛎ꎬ뻶뚨늻실뗘뛸ퟶ뗄믺뚯뚯ퟷꆣland. Thrust is applied and the landing gear retracted so 뢴량쪱탨볓폍쏅ꎬ쫕웰실볜ꎬ틔쪹량믺엀짽훁낲좫룟뛈ꆣ as to climb the airplane to a safe altitude. GO-AROUND THRUST, Maximum engine thrust to be 뢴량췆솦ꎬ used during the Go-Around Maneuver. 량믺뢴량웚볤쪹폃뗄ퟮ듳랢뚯믺췆솦ꆣ 70TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING GRADIENT, The ratio of height gained or lost in a given 쳝뛈ꎬ distance to the distance travelled. 퓚룸뚨뗄뻠샫쓚ꎬ믱뗃믲쪧좥뗄룟뛈폫쯹뺭맽뗄뻠샫횮 뇈ꆣ GRAPHITE, A strong, light material made from carbon 쪯쒫ꎬ for access panels, landing gear doors and flight 튻훖평첼쿋캬쯹훆돉뗄잿뛸쟡뗄닄쇏ꆣ폃틔훆퓬닕뿚controls. 룇ꎬ웰실볜닕쏅뫍량탐닙ퟝ쏦ꆣ GREAT CIRCLE ROUTE, Is the shortest distance 듳풲뮡몽쿟ꎬ between two points on the earth's surface. It is the line 뗘쟲뇭쏦솽뗣횮볤뗄ퟮ뛌뻠샫쫇틔뗘쟲훐탄캪풲탄,퓚formed by the surface of the earth on a plane that 웰량뗣뫍ퟅ슽뗣볤쯹탎돉뗄뮡쿟ꆣ평듳풲뮡몽쿟탎돉뗄헦passes thru the center of the earth, the departure point, 몽벣늻뛏룄뇤ꆣ퓚삼늮쳘뗈뷇쟺쿟춶펰짏뮭뗄횱쿟뷓뷼듳and the destination location. The true course formed by 풲뮡몽쿟ꆣ a great circle route constantly changes. A straight line drawn on a Lambert Conformal Conic Projection approximates a great circle route. GROSS PERFORMANCE, Actual or measured ퟜ탔쓜ꎬ performance of the airplane. 량믺쪵볊뗄믲솿뗃뗄탔쓜ꆣ GROSS WEIGHT (GW), Total weight of the entire 좫훘ꎨGWꎩꎬ airplane, fuel, oil, cargo, passenger, etc. 헻볜량믺뗄훘솿ꆣ냼삨량믺ꎬ좼폍ꎬ뮬폍ꎬ믵컯ꎬ뫍돋 뿍뗈뗈퓚쓚ꆣ GROUND, A part of an electrical circuit or system that 뗘쿟ꎬ has zero voltage. 퓚뗧슷믲뗧웸쾵춳훐ꎬ뻟폐쇣뗧톹뗄늿럝ꆣ GROUND FAULT (NO. 1), System fault that has 뗘쏦맊헏ꎨNOꎮ1ꎩꎬ occurred since airplane landing. ퟔ량믺ퟅ슽뫳쯹랢짺뗄쾵춳맊헏ꆣ 71TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING GROUND FAULT ( NO. 2), Loss of a ground connection 뗘쿟맊헏ꎨNOꎮ2ꎩꎬ or a short-circuit to ground. 뗘쿟췑뛏믲쒳쿟슷틲뛌슷뷓뗘ꆣ GROUND SPEED (GS), The speed of an aircraft 뗘쯙ꎨGSꎩꎬ relative to the surface of the earth. 량믺쿠뛔폚뗘쟲뇭쏦뗄쯙뛈ꆣ GROUND SPOILER, SEE SPOILER 뗘쏦죅쇷냥ꎬ 볻Spoiler. GROUND SUPPORT EQUIPMENT (GSE), Equipment 뗘쏦놣헏짨놸ꎨGSEꎩꎬ used to service, test, move, power, or repair an airplane 떱량믺퓚뗘쏦쪱ꎬ폃폚쟚컱ꎬ닢쫔ꎬ냡틆ꎬ뚯솦릩펦ꎬwhile it is on the ground. 믲캬탞폃뗄짨놸ꆣ GROUNDING POINT (TERMINAL), An electrical 뷓뗘뗣ꎨ뷓춷ꎩꎬ connection on the landing gear doors for electrically 쫇퓚웰실볜닕쏅짏뗄튻룶쪹량믺뗧뷓뗘뗄뗧뷓춷ꆣ쫇퓚grounding the airplane. An electrical connection near 볓폍뿚뢽뷼ꎬ쪹볓폍뎵믲뗘쿂폍뿢뗧뷓뗘뗄뗧뷓춷ꆣ the fueling station for electrically grounding the fueling base. GS, SEE - GROUND SPEED 뗘쯙ꎨGSꎩꎬ 볻 Ground Speedꎮ GSE, SEE - GROUND SUPPORT EQUIPMENT 뗘쏦놣헏짨놸ꎨGSEꎩꎬ 볻 Ground Support Equipmentꎮ GUARDED SWITCH, A switch that is protected against 듸놣뮤헖뗄뾪맘ꎬ accidental movement by having a cover installed 캪럀횹틢췢늦뚯뛸횱뷓ힰ폐헖룇뗄뾪맘ꆣ directly over it. 72TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING GW, SEE - GROSS WEIGHT 좫훘ꎨGWꎩꎬ 볻 Gross Weightꎮ H HAIRLINE CRACK, A serious defect in structure; a 쾸러쇑컆ꎬ crack that shows as a very thin line. 뷡릹쓚뗄퇏훘좱쿝ꎻ쇑컆뗄췢맛쫇튻쳵뫜쾸뗄쿟ꆣ HARD-OVER, A maximum pitch or roll maneuver. 벱욫ꎬ ퟮ듳뢩퇶믲뫡닠닙ퟝꆣ HDG HOLD, SEE - HEADING HOLD 몽쿲놣돖ꎬ 볻 Heading Holdꎮ HDG SEL, SEE - HEADING SELECT 몽쿲톡퓱ꎻ 볻 Heading Selectꎮ HEAD END, In a hydraulic actuator, reference to the 뚥뛋ꎬ part on the piston side of the actuator. 튺톹ퟷ뚯춲훐폫믮죻쿠쇚뗄ꆣ HEADING, The direction an airplane is pointed 몽쿲ꎬ referenced to true north or magnetic north. 쿠뛔폚헦놱믲듅놱뗄량믺횸쿲ꆣ 73TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING HEADING HOLD (HDG HOLD), A mode of the autopilot 몽쿲놣돖ꎨHDG HOLDꎩꎬ system that maintains the existing airplane heading. ퟔ뚯볝쪻쾵춳놣돖쿖퓚몽쿲뗄랽쪽ꆣ HEADING SELECT (HDG SEL), A mode of the autopilot 몽쿲톡퓱ꎨHDG SELꎩꎬ system where the pilot selects the desired airplane ퟔ뚯볝쪻쾵춳평량탐풱톡퓱몽쿲뗄랽쪽ꆣ heading. HEADWIND, Wind or component of wind coming from 뚥럧ꎬ the direction of airplane travel. 살ퟔ량믺잰랽뗄럧믲럧뗄럖솿ꆣ HEAT EXCHANGER, A metal component with many 죈붻뮻웷ꎬ passages through which a fluid can flow for cooling or 폐뫜뛠춨뗀뗄뷰쫴ퟩ볾ꎬ웸쳥퓚춨뗀샯쇷맽쪱ꎬ튻막웸heating one by another. 쇷뿉놻쇭튻막웸쇷샤좴믲볓죈ꆣ 74TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING HEIGHT ABOVE AIRPORT (HAA), Is the parenthetical 믺뎡짏뿕룟뛈ꎨHAAꎩꎬ figure following MDA which, when added to the airport 쫇MDA뫳삨뫅쓚뗄쫽횵ꎬ쯼폫믺뎡뇪룟쿠볓뫳벴쫇elevation, will give the MDA in feet above mean sea MDA룟폚욽뻹몣욽쏦뗄펢돟쫽ꆣ횻폐떱뷓뗘쟸엜뗀뚥뛋믲level. A HAA will follow a DA or DH only when there is 엜뗀춷뇪룟늻뿉뗃쪱ꎬ믺뎡짏뿕룟뛈닅룺ퟅ뻶뛏룟뛈ꎨDAno touchdown zone, runway end, or threshold elevation 믲DHꎩꎮ available. HEIGHT ABOVE TOUCHDOWN (HAT), IS the 샫뷓뗘뗣룟뛈ꎨHATꎩꎬ parenthetical figure following DH, DA or MDA which, 뻶뛏룟뛈믲ퟮ뗍쿂붵룟뛈뫳삨뫅훐뗄쫽횵ꆣ쯼폫뷓뗘when added to the touchdown zone, runway end, or 쟸ꆢ엜뗀뚥뛋ꆢ믲엜뗀춷뇪룟쿠볓뫳벴쫇뻶뛏룟뛈ꎨDAꎬthreshold elevation, will give the DH, DA or MDA in feet DHꎩ믲ퟮ뗍쿂붵룟뛈ꎨMDAꎩ룟폚욽뻹몣욽쏦펢돟쫽ꆣabove mean sea level. HAT is published in conjunction 뷓뗘룟뛈쫇폫횱뷓뷸뎡ퟅ슽뗄ퟮ뗍쳬웸쳵볾춬쪱릫늼뗄ꆣ with straight-in minimums. HERTZ (Hz), The standard radio equivalent of 뫕ꎨHZꎩꎬ frequency in cycles per second of an electromagnetic 떥캻쫇훜웚/쏫뗄뗧듅늨욵싊뗄뇪ힼ짤뗧떱솿ꆣ튻잧뫕 wave. One Kilohertz (kHz) is a frequency of one 쫇쎿쏫튻잧훜웚뗄욵싊ꆣ튻헗뫕쫇쎿쏫튻냙췲훜웚뗄 thousand cycles per second. One Megahertz (MHz) is a 욵싊ꆣ frequency of one million cycles per second. HEXADECIMAL NUMBERING SYSTEM, A numbering 쪮쇹뷸훆뇠뫅쾵춳ꎬ system with sixteen as the base. The system includes 튻훖틔16캪뗗쫽뗄뇠뫅쾵춳ꆣ룃쾵춳냼삨평쫽ퟖ0훁 digits zero through nine, and letters A through F 9ꎬퟖ쒸A훁F듺뇭10훁15ꎮ representing the numbers ten through fifteen. HIGH FREQUENCY (HF), The frequency band between 룟욵ꎨHFꎩꎬ 3 and 30 MHz. 욵싊듸퓚3훁30헗뫕횮볤ꆣ 75TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING HIGH SPEED TAXIWAY/EXIT/TURNOFF (HST), A long 룟쯙뮬탐뗀ꎯ돶뿚ꎨHSTꎩꎬ radius taxiway designed and provided with lighting or 쫇튻쳵냫뺶듳뗄뮬탐뗀ꆣ룃뮬탐뗀폐뗆맢뫍뇪횾뇭쏷량marking to define the path of aircraft, traveling at high 믺듓엜뗀훐탄떽뮬탐뗀훐탄튻뗣룟쯙ꎨ뿉듳떽60몣샯ꎩ춨speed (up to 60 knots), from the runway center to a 맽뗄슷뺶ꆣ튲놻돆캪듳냫뺶돶뿚믲췑샫뗀ꆣ룟쯙뮬탐뗀뗄point on the center of a taxiway. Also referred to as long 짨볆틢춼쫇볓쯙량믺ퟅ슽뫳췑샫엜뗀ꎬ듓뛸복짙엜뗀햼폃radius exit or turnoff taxiway. The high speed taxiway is 뗄쪱볤ꆣ designed to expedite aircraft turning off the runway after landing, thus reducing runway occupancy time. HOIST, A device for lowering and lifting an engine or a 뗵뎵ꎬ heavy component during removal and installation on the 퓚랢뚯믺믲훘늿볾닰킶뫍낲ힰ맽돌훐ꎬ폃폚럅쿂믲첧웰airplane. 랢뚯믺믲훘늿볾뗄ힰ훃ꆣ HOLDING, Airplane maneuver to keep the airplane from 뗈듽ꎬ progressing along the intended route of flight. 쪹량믺늻내풤뚨몽쿟볌탸량탐뗄믺뚯뚯ퟷꆣ HOLDING PATTERN, The predetermined maneuver 뗈듽몽쿟ꎬ which keeps aircraft within a specified air space while 쪹량믺뒦폚횸뚨뿕폲쓚뗈듽뿕훐붻춨맜훆쿂튻늽뗷뛈awaiting further clearance from air traffic control. 뗄풤뚨믺뚯뚯ퟷꆣ HOLD/HOLDING PROCEDURE, A predetermined 뗈듽돌탲ꎬ maneuver which keeps aircraft within a specified 놣돖량믺퓚횸뚨뿕폲뗈듽뿕훐붻춨횸믓뗄쿂튻늽탭뿉airspace while awaiting further clearance from air traffic 뗄풤뚨믺뚯뚯ퟷꆣ튲폃퓚뗘쏦닙ퟝ살놣돖량믺퓚횸뚨뗄뗘control. Also used during ground operations to keep 쟸쓚ꎬ믲퓚횸뚨뗣뗈듽뿕훐붻춨횸믓뗄쿂튻늽탭뿉ꆣ뇪ힼaircraft within a specified area or at a specified point 뗄뗈듽쪱볤쫇퓚 14,000펢돟믲룟뛈닣140틔쿂쪱1럖훓ꎬwhile awaiting further clearance from air traffic control. 틔짏캪 1럖냫훓ꆣ폐킩맺볒틔량탐룟뛈닣 200ퟷ1럖훓뫍The standard holding time is one minute at or below 1럖냫훓뗄뮮럖ꆣ 14,000 feet or FL 140 and 1 1/2 minutes above. The separation between 1 and 1 1/2 minutes is FL 200 in some countries. 76TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING HOLDING FIX, A specified fix identifiable to a pilot by 뗈듽뚨캻뗣ꎬ NAVAIDs or visual reference to the ground used as a 뗈듽맽돌훐퓚붨솢늢놣돖량믺캻훃쪱쪹폃뗄튻룶횸뚨reference point in establishing and maintaining the 뚨캻뗣ꆣ량탐풱뿉룹뻝떼몽첨믲뗘쏦쒿믺닎뾼쪶뇰룃뚨캻position of an aircraft while holding. 뗣ꆣ HONEYCOMB, A hexagonal material made of metal or 럤컑ꎬ Nomex for sandwich construction of panels. 튻훖폃뷰쫴믲Nomex훆돉뗄쇹뷇탎닄쇏ꎬ폃틔훆퓬볐킾 쏦냥ꆣ HORIZONTAL STABILIZER, The moveable horizontal 쮮욽낲뚨쏦ꎬ surface of the empennage used for pitch trim. 량믺캲틭뗄뿉뚯쮮욽쏦ꎬ폃살뿘훆뢩퇶엤욽ꆣ HOT BATTERY BUS, A battery bus which is not 죈뗧욿믣쇷쳵ꎬ switched and is always energized from the airplane 컞뗧쏅뿘훆뗄뗧욿믣쇷쳵ꎬ쪼훕평량믺뗧욿릩뗧ꆣ battery. 77TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING HUB CAP, An external covering to the axle of the main 싖顢쎱ꎬ landing gear wheels. 훷웰실볜싖훡뗄췢헖ꆣ HYDRAULIC FUSE, A device in the hydraulic system 튺톹놣쿕ꎬ for stopping fluid flow when a leakage occurs in a line 튺톹쾵춳쓚뗄튻훖ힰ훃ꆣ폃폚퓚놣쿕뗄쿂폎맜쿟짏랢짺downstream of the fuse. 킹슩쪱ꎬퟨ횹튺톹폍쇷뚯ꆣ I IAS, SEE - INDICATED AIRSPEED 횸쪾뿕쯙ꎬ 볻 Indicated Airspeedꎮ IGNITER (IGNITER PLUG), An electrical device for 뗣믰웷ꎨ믰뮨죻ꎩꎬ producing a spark in the combustion chamber. 퓚좼징쫒쓚닺짺믰뮨뗄뗧웷ꆣ 78TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING IGNITION EXCITER, An electrical component for 뗣믰벤샸웷ꎬ supplying high voltage to the igniters for producing a 쿲뗣믰웷쳡릩룟뗧톹쪹횮닺짺믰뮨뗄뗧ퟓ늿볾ꆣ spark. IGNITION SYSTEM, A system for starting or continuing 뗣믰쾵춳ꎬ combustion of the fuel-air mixture in the engine 튻룶쪹폍웸믬뫏컯퓚랢뚯믺좼징쫒쓚뾪쪼믲볌탸좼징combustion chamber. 뗄쾵춳ꆣ ILLUMINATE, To turn on or to provide light. 헕쏷ꎬ 듲뾪믲쳡릩뗆맢ꆣ ILS, SEE - INSTRUMENT LANDING SYSTEM 틇뇭ퟅ슽쾵춳ꎬ 볻 Instrument Landing Systemꎮ IMPROVED CLIMB PERFORMANCE, The rotation and 룄뷸엀짽탔쓜ꎬ climbout speed increased above normal to increase 폃듳폚헽뎣뗄첧싖뫍엀짽쯙뛈ꎬ살룄짆량믺뗄엀짽탔airplane climb performance, especially if an engine 쓜ꎬ폈웤쫇퓚튻첨랢뚯믺늻릤ퟷ쪱ꆣ quits. INDICATED AIRSPEED (IAS), The airspeed read 횸쪾뿕쯙ꎨIASꎩꎬ directly from the airspeed indicator without any 캴뺭죎뫎킣헽횱뷓듓뿕쯙뇭짏뛁돶뗄뿕쯙ꆣ compensation. INDICATOR, A component for showing quantity, 횸쪾웷ꎬ pressure, temperature or position by a pointer or 폃횸헫믲쫽ퟖ살횸쪾쫽솿ꎬ톹솦ꎬ컂뛈믲캻훃뗄늿볾ꎨ폫numerical display. (Similar to gage (gauge)). 볆솿틇샠쯆ꎩꆣ 79TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING INERTIAL REFERENCE SYSTEM, A self-contained, 맟탔믹ힼ쾵춳ꎬ navigational system based on the measurement of 틔닢솿량믺뗄볓쯙뫍ퟋ첬캪믹뒡뗄뛀솢떼몽쾵춳ꆣ acceleration and attitude. INFLIGHT PERFORMANCE, The performance of the 뿕훐탔쓜ꎬ aircraft while enroute. 량탐훐량믺뗄탔쓜ꆣ INITIAL APPROACH FIX (IAF), The fix which identifies 웰쪼뷸뷼뚨캻뗣ꎨIAFꎩꎬ the beginning of the approach to an airport. 뇪횾쿲ퟅ슽믺뎡뷸뷼뾪쪼뗄뚨캻뗣ꆣ INLET GUIDE VANES, A fixed set of blades in front of 뷸뿚떼쿲튶욬ꎬ an engine compressor for directing airflow to the 랢뚯믺톹웸믺잰뗄튻ퟩ만뚨튶욬ꎬ폃틔틽떼웸쇷뷸죋톹compressor. 웸믺ꆣ INNER LOOP CONTROL, For autopilot operation this is 쓚뮷슷뿘훆ꎬ the basis control of airplane pitch and roll attitude 뛔폚ퟔ뚯볝쪻틇닙ퟷꎬ헢쫇컞맘량탐몽뗀뗄량믺뢩퇶ퟋwithout regard to flight path. 첬뫍웂뛈뗄믹놾뿘훆ꆣ 80TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING INNER MARKER, A marker beacon located between 뷼횸뗣뇪ꎬ the middle marker and the end of the ILS runway. 캻폚쎤붵엜뗀춷뫍훐첨횮볤뗄탅뇪첨ꆣ INOP, SEE - INOPERATIVE 늻릤ퟷ뗄ꎬ 볻Inoperativeꎮ INOPERATIVE, Not working or operating. 늻릤ퟷꎬ 늻릤ퟷ믲컞램뷸탐닙ퟝꆣ INSTRUMENT FLIGHT RULES (IFR), Rules governing 틇뇭량탐맦퓲ꎨIFRꎩꎬ the procedures for conducting instrument flight. Also a 틇뇭량탐돌탲쯹탨ퟱ쫘뗄맦퓲ꆣ term used by pilots and controllers to indicate type of flight plan. INSTRUMENT LANDING SYSTEM, A precision 틇뇭ퟅ슽쾵춳ꎬ instrument approach system which normally consists of 튻훖뺫쏜틇뇭뷸뷼쾵춳ꆣ튻냣평몽쿲뗀탅뫅뷓쫕믺ꎬ쿂the following airplane components: localizer receiver, 뮬뗀탅뫅뷓쫕믺ꎬ뫍횸뗣탅뇪뷓쫕믺쯹ퟩ돉ꆣ glide slope receiver, and marker beacon receiver. INSTRUMENT METEOROLOGICAL CONDITIONS 틇뇭량탐웸쿳쳵볾ꎨIMCꎩꎬ (IMC), Meteorological conditions expressed in terms of 틔쓜볻뛈ꎬ폫퓆뗄뻠샫ꎬ뫍퓆쒻룟뗍폚ퟮ킡맦뚨뗄쒿쫓visibility, distance from cloud, and ceiling less than the 웸쿳쳵볾뗄튻훖웸쿳ힴ첬뗄뇭듯ꆣ minimums specified for visual meteorological conditions. INSTRUMENT RUNWAY, A runway equipped with 틇뇭엜뗀ꎬ electronic and visual navigation aids for which a 폃폚틔뺫쏜믲럇뺫쏜뷸뷼돌탲ퟷ뚩쏷ퟮ뗍쳬웸뇪ힼ횱precision or nonprecision approach procedure having 쿟ퟅ슽뗄ힰ놸폐뗧ퟓ뫍쒿쫓훺몽짨놸뗄엜뗀ꆣ straight-in landing minimums have been established. 81TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING INTEGRAL TANK, A metal container formed by the 헻쳥폍쿤ꎬ wing structure (spars, ribs, skin) for storage of fuel on 평믺틭뷡릹볾ꎨ솺ꆢ샟ꆢ쏉욤ꎩퟩ돉ꎬ폃살퓚량믺짏 the airplane. 뒢듦좼폍뗄뷰쫴죝웷ꆣ INTEGRATED CIRCUIT, A small piece of 벯돉뗧슷ꎬ semiconductive material that contains interconnected 튻킡욬쓚몬쿠뮥솬뷓뗄캢쯵뗧슷뗄냫떼쳥닄쇏ꆣ miniaturized electronic circuits. INTEGRATED RANGE, Tabular Operations Manual ퟛ뫏몽돌ꎬ performance data providing range as a function of a 쪹폃쫖닡붫몽돌ퟷ캪량믺ퟜ훘솿뗄몯쫽쳡릩뗄탔쓜쫽change in airplane gross weight. 뻝ꆣ INTERNATIONAL RESERVES, Reserves required by 맺볊몽쿟놸폃폍솿ꎬ the applicable governing agency when flying 퓚맺볊몽쿟량탐쪱ꎬ폐맘뗄헾뢮떥캻쯹튪쟳뗄놸폃좼폍international air route. 솿ꆣ INTERNATIONAL STANDARD ATMOSPHERE (ISA), 맺볊뇪ힼ듳웸ꎨISAꎩꎬ The hypothetical vertical distribution of atmospheric 맺볊쏱몽ퟩ횯ꎨICAOꎩ맦뚨뗄ꎬ튻훖횻퓚샭싛짏듦퓚temperature, pressure, and density as defined by the 뗄듳웸웤컂뛈ꎬ톹솦ꎬ뫍쏜뛈뗄뒹횱럖늼ꆣ International Civil Aeronautical Organization (ICAO). INTEGRATOR, An operational amplifier whose output 믽럖웷ꎬ voltage is determined by the input voltage, the input 평쫤죋뗧톹ꎬ쫤죋뗧ퟨꎬ랴삡뗧죝뫍쪱볤캢럖뛸뻶뚨웤resistance, the feedback capacitance, and time 쫤돶뗧톹뗄퓋쯣럅듳웷ꆣ differential. 82TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING INTERLOCK, A wire connected in series with an 솪쯸ꎬ equipment or device, or a condition that allows 튻룶틔뒮솪랽쪽붫틇웷ꎬ짨놸솪뷓퓚튻웰뗄뗧슷ꆣ믲헟operation if all requirements are met. 쫇떱쯹폐쳵볾뚼싺ퟣ쪱닅쓜릤ퟷ뗄ힴ첬ꆣ INTERNATIONAL CIVIL AVIATION ORGANIZATION, 맺볊쏱폃몽뿕ퟩ횯ꎬ A specialized agency of the United Nations whose 튻룶틔퓶뷸맺볊몽뿕떼몽뗄풭퓲뫍벼쫵ꎬ듙뷸맺볊쏱몽objective is to develop the principles and techniques of 퓋쫤뗄볆뮮폫랢햹캪쒿뇪뗄솪뫏맺튵듺샭ퟩ횯 international air navigation and to foster planning and development of international civil air transport. INTERROGATOR, The ground-based surveillance 톯컊웷ꎬ radar beacon transmitter-receiver, which normally scans 튻훖뗘쏦볠쫓샗듯탅뇪쫕랢믺ꆣ춨뎣퓚릤ퟷ쪱폫훷샗듯in synchronism with a primary radar, transmitting 춬늽즨쏨ꎬ랢짤늻솬탸뗄컞쿟뗧탅뫅ꎬ늻뛏뗘훘뢴튪쟳폫discrete radio signals which repetitiously request all 웤릤ퟷ랽쪽튻훂뗄펦듰믺뷸탐믘듰ꆣ쯹뷓쫕떽뗄믘듰탅뫅transponders on the mode being used to reply. The 폫훷샗듯뷓쫕떽뗄탅뫅쿠믬뫏ꎬ쿔쪾퓚춬튻욽쏦캻훃뗄샗replies received are mixed with the primary radar 듯웁쒻짏ꆣ returns and displayed on the same plan position radar scope. INTERSECTION, 붻닦뗣ꎬ 1. A point defined by any combination of courses, 1. 평몽쿟ꎬ뺶쿲랽캻쿟ꎬ믲솽룶틔짏뗄훺몽짨놸radials or bearings of two or more navigational 뗄랽캻붻믡뛸좷뚨뗄튻뗣ꆣ aids. 2. Used to describe the point where two runways 2. 횸솽쳵엜뗀뗄ꎬ뮬탐뗀폫엜뗀ꎬ믲솽쳵뮬탐뗀cross, a taxiway and a runway cross, or two 뗄붻닦뗣ꆣ taxiways cross. INVERTER, An electrical device for changing direct 뇤쇷웷ꎬ current to alternating current for standby (emergency) 폃살붫횱쇷뗧뇤돉붻쇷뗧ꎻ틔릩뗧웸쾵춳놸폃ꎨ뷴벱ꎩpower supply to electrical system. 뗧풴뗄뗧웸ힰ훃ꆣ 83TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING IRS, SEE - INERTIAL REFERENCE SYSTEM 맟탔믹ힼ쾵춳ꎬ 볻Inertial Reference Systemꎮ ISA DEVIATION, The amount of temperature or 폫맺볊뇪ힼ듳웸횮욫닮ꎬ pressure difference from ISA (see International 컂뛈믲톹솦폫맺볊뇪ힼ듳웸뗄닮횵ꎨ닎볻맺볊뇪ힼ Standard Atmosphere). 듳웸ꎩꆣ ISLAND RESERVES, Reserves required by the 떺포놸폃폍솿ꎬ applicable governing agency when flying routes 폐맘헾뢮떥캻튪쟳퓚쎻폐놸붵뎡뗄떺포볤량탐뗄량믺between islands with no alternate airports. 킯듸뗄놸폃좼폍솿ꆣ ISOBARIC CONDITION, Cabin pressure (altitude) 뗈톹ힴ뿶ꎬ remaining constant with changing airplane altitude. 퓚량믺룄뇤룟뛈쪱ꎬퟹ닕톹솦ꎨ벴ퟹ닕룟뛈ꎩ놣돖늻뇤 뗄ힴ뿶ꆣ ISOLATION VALVE, A valve in the system for 룴샫믮쏅ꎬ separation of the system into sections. 폃틔붫쾵춳럖룴돉벸룶늿럝뗄믮쏅ꆣ J JACK, A mechanical or hydraulic device for raising the 잧뷯뚥ꎬ airplane. 폃틔붫량믺첧웰뗄믺킵쪽믲튺톹쪽뗄ힰ훃ꆣ JACKING POINT, Location on the airplane for using a 잧뷯뚥횧뗣ꎬ jack. 량믺짏뿉틔죃잧뷯뚥돔솦뗄캻훃ꆣ 84TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING JACKSCREW, A rotating threaded rod used to drive a 훂뚯식룋ꎬ moveable component such as a flap or stabilizer. 폃살쪹뿉뚯늿볾죧뷳틭믲쮮욽낲뚨쏦퓋뚯뗄쓜릻탽 뗄식룋ꆣ 85TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING JET PIPE, A control component in some valves and 엧짤맜ꎬ actuators for controlling the flow of hydraulics or 퓚폐킩믮쏅뫍ퟷ뚯춲훐뗄뿘훆풪볾ꆣ폃폚뿘훆튺톹뫍 pneumatics. 웸뚯뗄쇷솿ꆣ JET PUMP, A component in the fuel system, operated 틽짤뇃ꎬ by fuel pressure, for removing water and fuel from a fuel 좼폍쾵춳쓚ꎬ평좼폍톹솦살닙ퟷꎬ폃폚듓좼폍쿤훐업돽tank. 쮮뫍좼폍뗄늿볾ꆣ 86TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING JOGGLE, An offset in sheet metal construction 헛뷓ꎬ designed to allow one piece to overlap, either higher or 튻훖욽쏦뷰쫴뷡릹짨볆뗄쏖늹램ꎬ쪹튻볾뷰쫴폫쇭튻 lower, the other piece. 볾쿠뮥뗾뫏ꆣ JOULE, A unit of electrical energy of 1 ampere of 붹뛺ꎬ current passing through a resistance of 1 ohm for 1 뗧쓜떥캻ꆣ튻낲엠뗧쇷춨맽튻얷쒷뗧ퟨ튻쏫훓쯹탨뗄뗧second. Ignition system energy is measured in joules. 쓜캪튻붹뛺ꆣ뗣믰쾵춳뗄쓜솿폃붹뛺뛈솿ꆣ JUMPER WIRE, An electrical connector for temporarily 뿧뷓쿟ꎬ bypassing part of an electrical current. 폃살퓝쪱엔춨늿럝뗧쇷뗄뗧웷솬뷓볾ꆣ JUNCTION BOX, A container which serves as a joining 뷓쿟뫐ꎬ place for electrical connections. May also contain ퟶ캪탭뛠뗧뷓춷뗄믣벯뒦뗄죝웷ꆣ튲뿉쓜쓚몬뗧웷ꆣ electrical components. K KEEL BEAM, A structural beam in the fuselage center 뢹솺ꎬ section (wheel well and under wing center section) to 믺짭훐뛎싖닕뫍틭쿂훐뛎ꎬ폃틔럀횹믺짭췤쟺뗄뷡릹ꆣ prevent the fuselage from bending. KEVLAR, A light, strong synthetic material for KEVLARꎬ secondary airplane structure. 튻훖벴쟡폖잿뗄죋릤뫏돉닄쇏ꎬ뿉릩훆퓬량믺뗄듎튪릹볾ꆣ 87TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING KILOWATT, An electrical energy unit, equal to one 잧췟ꎬ thousand watts, for specifying generator power output. 뗧쓜떥캻ꆣ뗈폚튻잧췟ꆣ폃틔좷뚨랢뗧믺뗄쫤돶릦싊ꆣ KINK, A sharp bend, twist or dent in a section of tubing, 얤뷡ꎬ wire bundle or angle stock. 퓚맜슷ꎬ뗧쿟퓺ꎬ믲뷇닄훐뗄볢뷇ꎬ얤ꎬ뫍낼뿓뗄늿 럝ꆣ KNIFE EDGE, A very sharp edge on drilled or machined 떶죐ꎬ metal which is usually the source point for corrosive ퟪ훆믲믺훆뷰쫴뗄럦샻뇟풵ꎬ춨뎣쫇뢯쪴뗄뾪쪼뒦ꆣ attack. KNOT, One nautical mile per hour. 뷚ꎨKꎬKT,KTSꎩꎬ 쎿킡쪱튻몣샯뗄쯙뛈ꆣ KREUGER FLAP, A type of leading edge flap that is 뿋슳룱뷳틭ꎬ fixed on the lower side of the wing and rotates forward 튻훖잰풵뷳틭ꎬ캻폚믺틭틭룹뢽뷼ꎬ탽잰짬ꆣ into the airstream. KW, SEE - KILOWATT 잧췟ꎬ 볻잧췟ꎨKilowattꎩꆣ L LABYRINTH SEALS, Rotating and stationary 뇍돝탍쏜럢ힰ훃ꎬ overlapping structures which utilize differential air 탽늢쟒만뚨뗄훘톡뷡릹ꆣ폃웸톹닮뚯뛸퓬돉췢늿뗄쏜pressure to form an external seal. Most commonly used 럢ꆣ퓚컐싖랢뚯믺짏ퟮ뎣폃ꆣ in turbine engines. 88TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING LAMINATED STRUCTURE, Composed of layers of a 럖닣뷡릹ꎬ composite material bonded or cured together to make a 튻훖샎만뛸쟡뗄뷡릹ꆣ평뛠닣뗄뢴뫏닄쇏붺뫏믲만뮯뛸strong and light structure. 돉ꆣ ., SEE-LIGHT EMITTING DIODE. 랢맢뛾벫맜ꎬ 볻 Light Emitting Diodeꎮ LANDING GEAR, The nose and main wheels with the 웰실볜ꎬ attachments for supporting the airplane on the ground. 폃틔퓚뗘쏦횧독량믺뗄잰싖ꎬ훷싖벰웤뢽볾ꆣ LANDING GEAR DOORS, Panels operated by the 웰실볜닕쏅ꎬ landing gear for closing wheel wells when the landing 평웰실볜닙ퟷꎬ폃틔퓚쫕짏웰실볜뫳맘뇕싖닕뗄쏦냥ꆣ gear is retracted. LANDING WEIGHT, Gross weight of the airplane at the ퟅ슽훘솿ꎬ destination or alternate airport. 량믺떽쒿뇪믺뎡믲놸붵믺뎡쪱뗄좫훘ꆣ 89TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING LANYARD, A cable for supporting or holding panels in 잣쯷ꎬ open position. 폃틔쪹쏦냥놣돖퓚듲뾪캻훃뗄룖쯷ꆣ LAP JOINT, An overlapping sheet of metal, joined to the 듮뷓ꎬ edge of another sheet in aircraft structure. 량믺뷡릹훐폫쿠쇚뷰쫴놡냥솬뷓뗄훘톡뷰쫴놡냥ꆣ LASER GYRO, A gyro which uses two laser light beams 벤맢췓식틇ꎬ to measure angular rotation. 튻훖평솽쳵벤맢맢쫸살닢솿탽뷇쯙뛈뗄췓식틇ꆣ LATCH, A device for fastening or locking. ꎬ 폃틔뷴만믲쯸뚨뗄ힰ훃ꆣ LATERAL AXIS, An axis passing through the airplane's 뫡훡ꎬ center of gravity, from wingtip to wingtip. 춨맽량믺훘탄듓튻닠틭볢춨쿲쇭튻닠틭볢뗄훡ꆣ LATERAL NAVIGATION, An autoflight mode in which 쮮욽떼몽ꎬ the FMCS is used to control the airplane roll. 쪹폃량탐맜샭볆쯣믺쾵춳뿘훆량믺뫡닠뗄튻훖ퟔ뚯량 탐랽쪽ꆣ LATITUDE, Measurement north or south of the equator 캳뛈ꎬ in degrees, minutes, and seconds. For INS equipped 뗘쟲짏폫돠뗀욽탐횮뮡쿟ꆣ평돠뗀틔놱믲틔쓏뛈ꆢ럖ꆢaircraft in degrees, minutes and tenth of minutes. 쏫뛈솿ꆣ뛔폚폐맟탔떼몽쾵춳뗄량믺퓲틔뛈ꎬ럖ꎬ뫍쪮뗈 럖뛈솿ꆣ LEAD ACID BATTERY, An electrical device for 잦쯡뗧욿ꎬ changing stored chemical energy into direct current. 붫훼듦뗄뮯톧쓜뇤캪횱쇷뗧뗄뗧웸짨놸ꆣ쯼쪹폃잦ꎬUses lead, lead oxide and sulphuric acid. 퇵뮯잦ꎬ뫍쇲쯡ꆣ 90TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING LEADING EDGE, The front edge of a wing, stabilizer or 잰풵ꎬ control surface. 믺틭ꎬ낲뚨쏦믲닙ퟝ쏦뗄잰늿뇟풵ꆣ LEADING EDGE FLAP, SEE - FLAP 잰풵뷳틭ꎬ 볻Flapꎮ LED, SEE - LIGHT EMITTING DIODE 랢맢뛾벫맜ꎬ 볻 Light Emitting Diodeꎮ LEMAC, Acronym for Leading Edge of the Mean 욽뻹웸뚯쿒잰풵ꎬ Aerodynamic Chord. 욽뻹웸뚯쿒잰풵뗄쯵킴ꆣ볻 Leading Edge of the Mean Aerodynamic Chordꎮ LEVEL-OFF ALTITUDE, Altitude of which the airflow 룄욽룟뛈ꎬ past the upper and lower surfaces of the wing. 량믺틲톲몽쪱랢뚯믺랢짺맊헏뛸쿂붵훁뗄룟뛈ꆣ LIFT, The vertical force produced by the airflow past the 짽솦ꎬ upper and lower surfaces of the wing. 웸쇷쇷맽믺틭짏쿂뇭쏦쯹닺짺뗄뒹횱솦ꆣ LIGHT EMITTING DIODE, An electronic device which 랢맢뛾벫맜ꎬ illuminates with red, amber or green light when supplied 춨뗧뫳쓜랢돶뫬즫ꎬ즫ꎬ믲싌즫맢뗄뗧ퟓ풪볾ꆣ with electric current. 91TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING LIGHT PLATE, A component part of an instrument 헕쏷냥ꎬ panel for illumination of words on the panel. 틇뇭냥뗄튻룶늿볾ꎬ폃틔헕쇁틇뇭냥짏뗄컄ퟖꆣ LIGHT SWITCH, A switch which contains a light. The 뗆맢뗧쏅ꎬ light either turns on or off as the switch is opened or 듸뗆뗄뗧쏅ꆣ뗧쏅뾪맘뛸뻶뚨뗆뗄쏷쏰ꆣ closed. LIMIT SWITCH, A mechanically operated component in 벫쿞뗧쏅ꎬ an electric actuator which turns off electrical power to 퓚뗧ퟷ뚯춲쓚ꎬ폃틔퓚ퟷ뚯볲떽듯듲뾪믲맘뇕캻훃 the actuator when the actuator reaches its open or 쪱ꎬ쟐뛏뗧풴뗄믺킵쪽닙ퟷ뗄늿볾ꆣ closed position. LIMITATIONS, Performance and operational limits 룷훖벫쿞ꎬ listed in the Airplane Flight Manual (AFM), such as 량믺량탐쫖닡ꎨAFMꎩ훐쇐돶뗄탔쓜쿞뛈뫍닙ퟷ벫쿞ꎬmaximum airspeed, maximum altitude and center of 죧ퟮ듳뿕쯙ꎬퟮ듳룟뛈ꎬ뫍훘탄뗄쿞훆뗈ꆣ gravity constraints. LINE REPLACEABLE UNIT, A unit which can be readily 몽쿟뿉뮻볾ꎬ changed on an aircraft during line maintenance 퓚몽쿟캬탞훐ꎬ뿉틔퓚량믺짏벴쪱닰뮻뗄늿볾ꆣ operations. LINE SELECT KEYS, Switches on the FMCS control 탐톡볼ꎬ display unit allowing control of information to and from 량믺맜샭뿘훆쾵춳뗄뿘훆쿔쪾웷짏뗄뗧쏅ꎬ뿉뿘훆닝룥the scratch pad and designated areas of the display. 삸뫍횸뚨쿔쪾뒦탅쾢뗄쫤죋뫍쫤돶ꆣ 92TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING LINEAR VARIABLE DIFFERENTIAL TRANSFORMER, 쿟탔뿉뇤닮뚯뇤톹웷ꎬ A differential transformer with a linear response. 뻟폐쿟탔랴펦뗄닮뚯뇤톹웷ꆣ LINK, A short connecting rod for transmitting motion. 솬룋ꎬ 솬뷓퓚솽룶늿볾횮볤ꎬ폃틔뒫뗝퓋뚯뗄뛌냴ꆣ LNAV, SEE - LATERAL NAVIGATION 쮮욽떼몽ꎬ 볻Lateral Navigationꎮ LOAD AND TRIM SHEET, A form containing tables and 퓘훘뫍욽뫢뇭ꎬ charts to account for the weight and balance effect of all 폐ퟅ쿔쪾쎿룶몽냠잰량믺뗄룷쿮튵퓘뫍쯹볓좼폍뛔훘items and fuel loaded before each flight. 솿뫍욽뫢펰쿬뗄춼뇭뗄튻훖뇭룱ꆣ LOAD FACTOR, The ratio of the lift being produced by ힰ퓘쾵쫽ꎬ the wings to the weight of the aircraft. 믺틭닺짺뗄짽솦뫍량믺훘솿뗄뇈횵ꆣ LOCATOR MIDDLE MARKER (LMM, MM), A marker 훐횸뗣뇪ꎬ beacon that defines a point along the glide slope of an 폃틔횸쪾틇뇭ퟅ슽쾵춳뷸뷼뗄쿂뮬뗀짏춨뎣쿠떱폚뻶ILS approach, normally located at or near the point of 뛏룟뛈믲웤뢽뷼뗄튻뗣뗄횸뗣뇪ꆣ decision height. LOCATOR OUTER MARKER (LOM, OM), A marker 풶횸뗣뇪ꎬ beacon at or near the point of glide slope intercept of an 캻폚믲뾿뷼틇뇭ퟅ슽쾵춳뗄쿂뮬뗀뷘믱뗣뢽뷼뗄횸뗣ILS approach. 뇪ꆣ LOCALIZER, The component of an ILS which provides 몽쿲뗀ꎬ lateral course guidance to the runway. 틇뇭ퟅ슽쾵춳훐뗄튻룶늿볾ꆣ쯼쓜쳡릩떽엜뗀뗄쮮욽몽뗀틽떼ꆣ 93TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING LOCKBOLT, A steel fastener which prevents unwanted 놣쿕식쮨ꎬ rotation by using a collar instead of a nut. 폃뮷좦듺쳦식쎱틔럀횹늻뇘튪뗄뚯뗄룖뷴만볾ꆣ LOGIC, A representation of complicated electrical and 싟벭쿟슷ꎬ electronic circuits by simple symbols called logic 폃볲떥뗄싟벭럻뫅살듺뇭뢴퓓뗄뗧웸뗧슷뫍뗧ퟓ뗧슷ꆣ symbols. LOGIC DIAGRAM, A diagram that uses logic gates to 싟벭뗧슷쪾틢춼ꎬ represent the function of a control circuit. 튻룶폃싟벭쏅살쪾틢뿘훆쿟슷릦쓜뗄춼ꆣ LOGIC GATE, A device or circuit which has no output 싟벭쏅ꎬ until it is triggered into operation by an input signal. A 횻폐떱쫤죋뛋폐쫤죋탅뫅뒥랢쪱ꎬ닅폐쫤돶뗄튻훖풪볾logic gate is an AND, OR, NOT, NAND, NOR, or 믲뗧슷ꆣ싟벭쏅럖캪ꎺ폫쏅ꆢ믲쏅ꆢ럇쏅ꆢ폫럇쏅ꆢ믲럇exclusive OR. 쏅ꆢ뫍틬믲쏅ꆣ LOGO LIGHT, A spot or flood type light mounted on 뇪횾뗆ꎬ aircraft structure and directed toward an airline LOGO or 퓚량믺뷡릹짏ힰ훃뗄뻛맢뗆믲랺맢뗆ꆣ폃폚횱뷓헕퓚믺other message on the fuselage or tail surface; for 짭믲믺캲짏뗄몽뿕릫쮾믕뇪믲웤쯻뇪횾짏ꎬ퓚특몽쪱헕쇁visibility during hours of darkness. 헢킩뇪횾ꆣ 94TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING LONGERON, A structural component in the horizontal 듳솺ꎬ direction of the fuselage or nacelle. 믺짭믲뛌닕짏쮮욽랽쿲뗄뷡릹늿볾ꆣ LONG RANGE CRUISE (LRC), Cruise speed that is 풶돌톲몽쯙뛈ꎬ associated with fuel conservation, producing fuel 튻룶폫뷚쪡좼폍폐맘뗄톲몽쯙뛈ꆣ퓚듋톲몽쯙뛈쿂ꎬ쎿mileage one percent less than the maximum fuel 튻떥캻좼폍쯹쓜량뗄솨돌ꎬ뇈ퟮ듳뗄좼폍솿몽돌킡냙럖횮mileage available. 튻ꆣ LONGITUDINAL AXIS, An axis passing through the ퟝ훡ꎬ airplane's center of gravity, from front to rear. 평믺춷훁믺캲맡뒩믺짭훘탄뗄훡ꆣ LOST MOTION DEVICE, A mechanism which does not 뿕믘ힰ훃ꎬ operate a component following initial movement of 퓚뿘훆쫤죋돵쪼뚯ퟷ뫳ꎬ벴늻퓙닙ퟷ늿볾뗄믺훆ꆣ폃폚control input. 량탐닙ퟝ쾵춳쓚ꎬ틔럀량믺횸쇮뮥쿠잣훆ꆣ LOUVER, An opening with slots allowing the passage of 냙튶뒰ꎬ air. 죃뿕웸쇷춨뗄폐뛠쳵러뗄뾪뿚ꆣ 95TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING LOW RANGE RADIO ALTIMETER, A system that 뗍뿕컞쿟뗧룟뛈뇭ꎬ measures the vertical distance from the airplane to the 튻훖닢솿량믺훁뗘탎뗄뒹횱뻠샫뗄쾵춳ꆣ terrain. LRC, Stands for Long Range Cruise speed. Represents 풶돌톲몽쯙뛈ꎬ the typical cruise speed for a given jet airplane; usually 풶돌톲몽쯙뛈뗄쯵킴ꆣ듺뇭엧웸쪽량믺뎣볻뗄톲몽쯙expressed as a Mach number. 뛈ꎬ춨뎣틔십뫕쫽랽쪽뇭쪾ꆣ LRRA, SEE - LOW RANGE RADIO ALTIMETER 뗍뿕컞쿟뗧룟뛈뇭ꎬ 볻 Low Range Radio Altimeterꎮ LRU, SEE - LINE REPLACEABLE UNIT 몽쿟뿉뮻볾ꎬ 볻 Line Replaceable Unitꎮ LUBRICANT, A substance used to reduce friction 죳뮬볁ꎬ between moving parts. It can be a natural or an artificial 폃폚복쟡퓋뚯컯쳥횮볤닺짺뗄쒥닁뗄컯훊ꆣ쯼뿉틔쫇쳬material. 좻뗄믲죋릤훆퓬뗄풭쇏ꆣ LVDT, SEE - LINEAR VARIABLE DIFFERENTIAL 쿟탔뿉뇤닮뚯뇤톹웷ꎬ TRANSFORMER 볻 Linear Variable Differential Transformerꎮ M MAC, SEE - MEAN AERODYNAMIC CHORD 욽뻹웸뚯쿒ꎬ 볻 Mean Aerodynamic Chordꎮ MACH NUMBER, The ratio of the aircraft's true 십뫕쫽ꎬ airspeed to the speed of sound at that point. 량믺헦뿕쯙폫룃뒦틴쯙횮뇈ꆣ 96TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING MACH TRIM, Correction to airplane attitude (nose up) 십뫕엤욽ꎬ during flight at high speed by using the horizontal 폃쮮욽낲뚨쏦뛔룟쯙량탐훐뗄량믺뗄뢩퇶ퟋ첬쯹ퟶ뗄stabilizer. 뗷헻ꎨ믺춷뎯짏ꎩꆣ MAGNETIC HEADING, The heading of the airplane 듅몽쿲ꎬ relative to magnetic north. 쿠뛔폚듅놱뗄량믺몽쿲ꆣ MAGNETIC VARIATION (1), The difference between 듅닮ꎨ1ꎩꎬ magnetic and true north. 헦놱폫듅놱뗄닮뇰ꆣ MAGNETIC VARIATION (2), The orientation of a 듅닮ꎨ2ꎩꎬ horizontal magnetic compass with respect to true north. 쿠뛔폚헦놱뗄쮮욽듅싞엌뚨캻ꆣ틲캪뗘쏦뗄듅솦쿟퓚ퟷBecause there is a continuous small change of direction 늻뛏뗄캢솿룄뇤ꎬ듅욫뷇퓚뎤쪱볤쓚뛠쫽쫇늻튻훂뗄ꆣ쎿of lines of magnetic force over the surface of the earth , 컥쓪Jeppesen쫖닡믡내헕맺볊맟샽킣헽뗈듅욫뷇쿟ꎨ뗈magnetic variation at most locations is not constant over 듅닮쿟ꎩꆣꎨ볻믹뗣욫닮ꎩ long periods of time. Lines of equal magnetic variation (isogonics lines) are updated on Jeppesen charts every five years in accord with worldwide practice. (see Station Declination). MAIN ENGINE CONTROL, A component on the engine 훷랢뚯믺뿘훆웷ꎬ for controlling fuel flow for starting and engine operation. 랢뚯믺짏캪랢뚯믺웰뚯뫍퓋뿘훆좼폍쇷솿뗄늿볾ꆣ MAIN GEAR, The main wheels with the attachments for 훷웰실볜ꎬ supporting the airplane on the ground. 폃틔퓚뗘쏦횧독량믺뗄훷싖벰웤뢽볾ꆣ MAINTENANCE, Work accomplished in support of the 캬탞ꎬ structure and systems of an aircraft. It includes, 퓚놣헏량믺쾵춳뫍뷡릹쪱쯹ퟶ뗄릤ퟷꆣ냼삨볬닩ꎬ듳탞ꎬinspection, overhaul, repair, preservation and the 탞샭ꎬ놣퇸뫍늿볾룼뮻ꆣ replacement of parts. 97TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING MANEUVER CAPABILITY, The ability of the aircraft to 믺뚯쓜솦ꎬ perform certain maneuvers up to a certain load factor. 량믺췪돉ힰ퓘쾵쫽듯떽튻쳘뚨횵뗄믺뚯뚯ퟷ뗄쓜솦ꆣ MANEUVER MARGIN, The amount of residual 믺뚯탔폠뛈ꎬ maneuver capability present before the onset of buffet. 량믺퓚퓢폶뚶헱횮잰ꎬ쯹쪣뗄닙ퟝ쓜솦뗄듳킡ꆣ MANIFOLD, A duct or chamber with several inlets and ퟜ맜ꎬ outlets for air or fluid distribution. 폃틔뿕웸믲튺쳥럖늼뗄뛠뷸뿚뫍뛠돶뿚뗄맜뗀믲죝웷ꆣ MANIFOLD INTERCONNECT VALVE, A valve in the ퟜ맜솪뷓믮쏅ꎬ equipment cooling system for providing a normal flow of 짨놸샤좴쾵춳쓚뗄믮쏅ꆣ폃폚쿲믺닕쳡릩헽뎣퓙톭뮷뿕recirculated air to the flight compartment. On specific 웸ꆣ퓚쳘쫢쟩뿶쿂믡릩룸뿕뗷뿕웸ꆣ occasions it will provide conditioned air. MANUAL OPERATION, Method of operating a 죋릤닙ퟷꎬ component by hand. 쫖릤닙ퟝ늿볾뗄랽램ꆣ MANUALS, Books with instructions for proper 쫖닡ꎬ maintenance and operation of the airplane systems. 캪쓜헽좷뗘캬뮤뫍닙ퟷ량믺쾵춳뛸뇠킴뗄쮵쏷쫩ꆣ MANUFACTURED RIVET HEAD, The head of a rivet 믺킵훆퓬뗄쎭뚤춷ꎬ that was preformed during its manufacture (see upset 퓚쎭뚤훆퓬쪱틑뚨탎뗄쎭뚤춷ꆣꎨ볻엲뺶춷ꎩꆣ head). MASS, The quantity of matter in a body. It gives the 훊솿ꎬ body weight when it is exposed to gravity. 튻볾컯쳥뗄컯훊쫽솿ꆣ떱룃컯쳥쫜떽뗘쟲틽솦쪱훊솿닺짺훘솿ꆣ 98TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING MASS MEMORY, A memory that can store large 듳죝솿듦뒢웷ꎬ amounts of information and hold that information 뿉틔뒢듦늢쓜폀뻃놣쇴듳솿탅쾢뗄듦뒢웷ꆣ permanently. MASTER, The device or system which controls the 훷뿘첨ꎬ system mode of operation. 뿘훆쾵춳닙ퟷ랽쪽뗄ힰ훃믲쾵춳ꆣ MAX CLIMB THRUST (MCT), Maximum engine thrust ퟮ듳엀짽췆솦ꎨMCTꎩꎬ to be used during climb. 량믺엀짽웚볤쯹쓜폃뗄ퟮ듳랢뚯믺췆솦ꆣ MAX CONTINUOUS THRUST (MCT), Maximum engine ퟮ듳솬탸췆솦ꎨMCTꎩꎬ thrust to be used continuously when one engine is 떱튻첨랢뚯믺늻릤ퟷ쪱ꎬ뿉틔솬탸늻뛏뗘쪹폃뗄ퟮ듳랢inoperative. 뚯믺췆솦ꆣ MAX TAKEOFF THRUST, Maximum engine thrust to be ퟮ듳웰량췆솦ꎬ used during takeoff. 웰량웚볤쯹쓜폃뗄ퟮ듳랢뚯믺췆솦ꆣ MAXIMUM TAKE-OFF WEIGHT, The maximum take off ퟮ듳웰량훘솿ꎬ weight as permitted structural limits or performance 뷡릹벫쿞폫탔쓜벫쿞솽헟훐뗄킡헟탭뿉뗄ퟮ듳웰량훘limits, whichever is lower. 솿ꆣ MAXIMUM RANGE CRUISE (MRC), Cruise speed ퟮ듳몽돌톲몽쯙뛈ꎬ producing the greatest amount of range. 쓜쪹량믺몽돌ퟮ듳뗄톲몽쯙뛈ꆣ MEAN AERODYNAMIC CHORD, Reference distance 욽뻹웸뚯쿒ꎬ located at a fixed position on the aircraft used to locate 캻폚량믺짏튻룶만뚨캻훃ꎬ뿉폃살좷뚨훘탄캻훃뗄믹ힼthe Center of Gravity. 뻠샫ꆣ 99TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING MEC (NO. 1), SEE - MAIN ENGINE CONTROL 랢뚯믺훷뿘훆ꎬ 볻 Main Engine Controlꎮ MEC (NO. 2), SEE - MAIN EQUIPMENT CENTER ퟜ짨놸훐탄 볻 Main Equipment Centerꎮ MEL, SEE - MINIMUM EQUIPMENT LIST ퟮ뗍짨놸쟥떥ꎬ 볻 Minimum Equipment Listꎮ MEMORY, In a digital system the memory is where 듦뒢웷ꎻ information is stored. 퓚쫽ퟖ쾵춳훐뒢듦탅쾢뗄뗘랽ꆣ METER, Any mechanical or electrical device that is 볆솿뇭ꎬ used to record, indicate, measure or sense a specific 폃폚볇슼ꎬ횸쪾ꎬ닢솿ꎬ믲룐쫜튻닙ퟷ맽돌뗄튻룶쳘쫢portion of an operation. 늿럝뗄죎뫎튻훖믺킵믲뗧ퟓힰ훃ꆣ METERING VALVE, A valve for controlling flow of air or 볆솿믮쏅ꎬ fluid. 폃살뿘훆뿕웸믲튺쳥쇷솿뗄믮쏅ꆣ MICRON, A measurement of filter effectiveness, one 캢쏗ꎬ micron equals one millionth (.000001) of a meter. 맽싋웷킧싊뗄볆쯣떥캻ꆣ튻캢쏗뗈폚냙췲럖횮튻쏗ꆣ MIDDLE MARKER, A marker beacon that defines a 훐횸뗣뇪ꎬ point along the glide slope of an ILS approach. It is 퓚폃틇뇭ퟅ슽쾵춳ퟅ슽쪱ꎬ폃살좷뚨쿂뮬뗀짏튻뗣뗄횸normally located at or near the point of decision height. 뗣탅뇪ꆣ쯼튻냣캻폚믲뾿뷼뻶뛏룟뛈ꆣ 100TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING MICRO SWITCH, A miniature mechanical device that 캢뚯뗧쏅ꎬ completes or breaks the current path. 튻룶쓜탎돉믲쟐뛏뗧쇷춨슷뗄쳘킡탍믺킵짨놸ꆣ MIKE OR MIC, A shortened form of microphone. 뮰춲ꎬ 뮰춲튻ퟖ뗄쯵킴ꆣ MIL, One thousandth (.001) of an inch. 쏜뛺ꎬ 잧럖횮튻펢듧ꆣ MILLIBARS, A unit of barometric pressure equal to 뫁냍ꎬ approximately millimeters of mercury. 튻룶뛈솿웸톹뗄떥캻ꎬ튻뫁냍풼쿠떱폚뫁쏗릯훹ꆣ MINIMUM DESCENT ALTITUDE (MDA), The lowest ퟮ뗍쿂붵룟뛈ꎨMDAꎩꎬ altitude to which a descent is authorized for a 량믺ퟷ럇뺫쏜뷸뷼쪱쯹ힼ탭쿂붵뗄ퟮ뗍룟뛈ꆣ nonprecision approach. MINIMUM ENROUTE ALTITUDE (MEA), The lowest ퟮ뗍몽슷룟뛈ꎨMEAꎩꎬ published altitude between radio fixes that meets 퓚떼몽폃컞쿟뗧뚨캻뗣횮볤ꎬ럻뫏풽헏튪쟳뗄틑릫늼 obstacle clearance requirements between those fixes 뗄ퟮ뗍룟뛈ꆣ퓚탭뛠맺볒ꎬퟮ뗍몽슷룟뛈놣헏쇋뫏룱떼몽 and in many countries assures acceptable navigational 탅뫅뗄뷓쫕랶캧ꆣ signal coverage. MINIMUM EQUIPMENT LIST, Document prescribing ퟮ뗍짨놸쟥떥ꎬ operation of the airplane with certain systems or 횸뚨량믺퓚쒳킩쾵춳믲ퟓ쾵춳늻릤ퟷ뗄쟩뿶쿂ꎬ죧뫎 subsystems inoperative. 닙ퟷ량믺뗄컄볾ꆣ MISSED APPROACH (MA or GA), A maneuver 뢴량ꎨMA or GAꎩꎬ conducted by the pilot when an instrument approach 량탐풱틲캴쓜췪돉틇뇭뷸뷼뛸떼훂뢴량쯹닉좡뗄튻룶 cannot be completed to a landing and results in a Go- 믺뚯뚯ퟷꆣ Around. 101TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING MIX VALVE, A valve assembly with two or more 믬뫏믮쏅ꎬ individual valves used for airflow distribution in air 퓚뿕뗷쾵춳쓚ꎮ폃틔웸쇷럖늼뗄뻟폐솽룶믲솽룶틔짏떥conditioning system. 쳥믮쏅뗄믮쏅ퟩ볾ꆣ MMO, The maximum Mach number at which the aircraft MMOꎬ may be operated. 량믺뿉쪹폃뗄ퟮ듳십뫕쫽ꆣ MODE, A specific operating state or condition; ., 랽쪽ꎬ Autopilot mode, MAP mode, etc. 튻룶쳘뚨뗄릤ퟷힴ첬믲쟩뿶ꎬ죧ퟔ뚯볝쪻랽쪽ꎬMAP 랽쪽뗈뗈ꆣ MODULATION, Combining two or more electrical 뗷훆ꎬ signals with the result that one signal is varied by the ퟩ뫏솽룶믲솽룶틔짏뗄뗧ퟓ탅뫅ꎬ쪹튻룶탅뫅쯦웤쯻탅others. 뫅뗄뇤뮯뛸뇤뮯ꆣ MODULE, A housing that contains related system ퟩ볾ꎬ components. 쓚ힰ쿠맘뗄쾵춳늿볾뗄믺쳥ꆣ MONOCOQUE, A type of construction in which the 펲뿇쪽ꎬ fuselage skin carries all the loads. 믺짭쏉욤돐떣쯹폐퓘뫉뗄뷡릹탎쪽ꆣ MONOPOLE, A speed sensor that senses magnetic 떥벫ꎬ pulses from a magnetic nut or gear teeth on a shaft. 튻룶쓜룐펦떽듅식쎱믲돝싖훡짏뗄듅싶돥쫽뗄쯙뛈These pulses are interpreted as RPM by the controller. 룐펦웷ꆣ헢킩싶돥뿉평뿘훆웷틫돉ꎯ럖훓ꆣ MOTOR OPERATED VALVE, A valve using an electric 십듯닙ퟷ믮쏅ꎬ motor for opening, closing and modulation. 폃뗧십듯살뾪ꆢ맘뫍뗷훆뗄믮쏅ꆣ 102TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING MSL ALTITUDE, Altitude expressed in feet measured 욽뻹몣냎룟뛈ꎬ from mean sea level. 틔펢돟캪떥캻ꎬ평욽뻹몣욽쏦솿웰뗄룟뛈ꆣ MUFFLER, A device in the pneumatic system for 쿻틴웷ꎬ reducing the noise of the airflow through the pneumatic 퓚웸풴쾵춳쓚ꎬ폃틔복뗍뿕웸쇷뺭웸풴맜뗀쯹짺뗄퓫틴duct. 뗄ힰ훃ꆣ MULTIPLEXER, A device that allows two or more 뛠슷뒫쫤웷ꎬ signals to be transmitted simultaneously on a single 튻룶쓜죃솽룶믲솽룶틔짏뗄탅뫅춬쪱퓚튻뗀뒫쯍늨ꎬ튻carrier wave, communications channel, or data bus. 쳵춨톶쿟슷ꎬ믲튻쳵쇏쫽뻝ퟜ쿟짏뒫뗝뗄짨놸ꆣ N N1 , Speed of the low pressure compressor rotor. N1ퟓ쯙ꎬ 랢뚯믺뗍톹톹웸믺ퟓ뗄쯙ꆣ N1 BLOOM, A change in engine N1 and thrust indicated N1벤퓶ꎬ on the N1 gages and detected by the autothrottle BITE 폍쏅놣돖맽돌훐ꎬ퓚N1뇭짏돶쿖뗄평ퟔ뚯폍쏅ퟔ볬첽during throttle hold operation. 닢떽뗄랢뚯믺N1뫍췆솦뗄뇤뮯ꆣ N2 , High pressure compressor rotor speed. N2ퟓ쯙ꎬ 랢뚯믺룟톹톹웸믺ퟓ뗄쯙ꆣ NACELLE, A streamlined enclosure on the wing or 뛌닕ꎬ fuselage for the engine. 믺틭믲믺짭짏캪낲ힰ랢뚯믺뛸폃뗄쇷쿟탎뿇쳥ꆣ 103TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING NAND GATE, An AND gate followed by an inverter to 럇폫쏅ꎬ form a binary circuit in which the output is logic 0 if all 퓚폫쏅뫳쏦뷴룺ퟅ튻룶랴쿲웷뗄뛾뷸훆뗧슷ꎬ떱쯹폐 inputs are logic 1. 쫤죋캪싟벭1쪱ꎬ쫤돶캪싟벭0ꆣ NAUTICAL AIR MILES (NAM), The actual air distance 뿕몣샯ꎨNAMꎩꎬ flow expressed in nautical miles without respect to a 틔몣샯살뇭쪾뗄량믺퓚뿕훐쯹량맽뗄쪵볊뿕훐량탐뻠 stationary object. 샫ꆣ뿕몣샯컞탨닎뾼뗘쏦컯쳥ꆣ NAUTICAL GROUND MILES (NGM), The distance 뗘몣샯ꎨNGMꎩꎬ travelled in relation to the ground expressed in nautical 틔몣샯살뇭쪾뗄량믺쿠뛔폚뗘쏦쯹량맽뗄뻠샫ꆣ miles. NAUTICAL MILE, A distance equivalent to feet 몣샯ꎬ or 1852 meters. 쿠떱폚 6076펢돟믲 1852쏗뗄뻠샫떥캻ꆣ NAVIGATION, The art of determining the geographical 떼몽ꎬ position and maintaining desired direction of an aircraft 뻶뚨량믺뗄뗘샭캻훃뫍놣돖량믺쿠뛔폚뗘쟲뇭쏦쯹쾣relative to the earth's surface. 췻뗄랽쿲뗄벼쫵ꆣ NEGATIVE LOGIC, A form of logic in which the more 랴싟벭ꎬ positive voltage level represents logic 0 and the more 헽뗧톹쮮욽풽쫇듺뇭싟벭0ꎬ뢺뗧톹쮮욽퓲풽쫇듺뇭싟negative level represents a logic 1. 벭1뗄튻훖싟벭탎쪽ꆣ NEGATIVE RELIEF VALVE, A valve in the 뢺쫍톹믮쏅ꎬ pressurization system for preventing cabin altitude to be 퓶톹쾵춳쓚ꎬ폃살럀횹믺닕룟뛈뎬맽량믺룟뛈ꎨ믲믺닕above airplane altitude (or cabin pressure to be below 톹솦뗍폚췢뷧듳웸톹솦ꎩ뗄믮쏅ꆣ ambient pressure). 104TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING NEOPRENE, An oil and grease-resistant synthetic 싈뚡쿰붺ꎬ rubber. Used mostly for seals and self lock nuts, etc. 튻훖쓍폍뫍폍횬뗄뫏돉쿰붺ꆣ뛠폃ퟷ쏜럢ힰ훃믲ퟔ쯸식 쎱ꎬ뗈ꆣ NEUTRAL SHIFT SENSOR, A sensor used for 훐솢뇤뮻첽닢웷ꎬ detecting the elevator and stabilizer trim condition. 폃폚첽닢짽붵뛦뫍낲뚨쏦엤욽ힴ뿶뗄뒫룐웷ꆣ NET PERFORMANCE, Aircraft gross performance 뺻탔쓜ꎬ degraded by an amount determined by the local 틔량믺ퟜ탔쓜복좥평떱뗘폐맘떥캻캪쇋쪹탔쓜볆쯣governing agency for conservative calculation 뷏캪놣쫘쯹뚨뗄튻룶솿뫳쯹뗃뗄탔쓜ꆣ purposes. NICKEL-CADMIUM BATTERY, An electrical device for 쓸뗧욿ꎬ changing stored chemical energy into direct current. 붫뒢듦뗄뮯톧쓜뇤캪횱쇷뗧뗄뗧웷풪볾ꆣ쯼쪹폃쟢퇵뮯Uses nickel hydroxide, cadmium hydroxide and 쓸ꆢ쟢퇵뮯뫍쟢퇵뮯볘ꆣ potassium hydroxide. NOBLE, A term used to explain the properties of some 뛨탔ꎬ elements that are chemically inert or inactive. 폃폚뷢쫍폐킩풪쯘늻틗웰뮯톧ퟷ폃뗄쳘탔뗄쏻듊ꆣ NOISE ABATEMENT PROCEDURE, A flight path and 붵뗍퓫짹돌탲ꎬ climb profile designed to limit noise in the airport area. 튻훖캪붵뗍믺뎡뗘쟸퓫짹뛸짨볆뗄량탐몽벣뫍엀짽웊 쏦ꆣ NOMEX, Material similar to paper for honeycomb NOMEXꎬ construction. (Nomex is a trade name.) 쫇튻훖샠쯆횽뗄닄쇏ꎬ폃틔훆ퟷ럤컑뷡릹ꆣꎨNOMEX 쫇짌욷쏻ꎩꆣ NON-RETURN VALVE, A valve allowing flow in only 떥쿲믮쏅ꎬ one direction. 횻퓊탭쿲튻룶랽쿲쇷뚯뗄믮쏅ꆣ 105TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING NONDIRECTIONAL BEACON (NDB), A radio beacon 컞랽쿲탅뇪ꎨNDBꎩꎬ which transmits nondirectional signals whereby the pilot 랢짤컞랽쿲탅뫅뗄컞쿟뗧탅뇪첨ꆣ뻝듋량탐풱쓜릻폃ퟔcan use the ADF to determine his bearing to or from the 뚯뚨쿲틇ꎨADFꎩ좷뚨쯻뗄놳첨믲쿲첨랽캻ꆣ station. NONVOLATILE MEMORY, A type of memory which 폀뻃탔듦뒢웷ꎬ does not lose its contents when power is removed. 퓚쪧좥뚯솦믲뗧솦쪱늻믡쪧좥볇틤쓚죝뗄듦뒢웷ꆣ NOR GATE, An OR gate followed by an inverter to form 믲럇쏅ꎬ a binary circuit in which the output is logic 0 if any of the 퓚믲쏅뫳쏦뷴룺ퟅ튻룶랴쿲웷뗄뛾뷸훆뗧슷ꆣ떱죎뫎튻inputs is logic 1. 룶쫤죋캪싟벭1쪱ꎬ쫤돶캪싟벭0ꆣ NOSE CONE, A device on the front of the engine that 뷸웸헻쇷ힶꎬ guides airflow to the primary airflow path of the engine. 튻룶캻폚퓚랢뚯믺잰뛋ꎬ폃폚틽떼웸쇷춨맽랢뚯믺뗄훷 웸쇷춨뗀뗄ힰ훃ꆣ NOSE COWL, Front section of the nacelle for air inlet to 잰헻쇷헖ꎬ the engine. 틽떼뿕웸뷸죋랢뚯믺뗄뛌닕잰뛎ꆣ NOSE DOME, Front section of the engine for 춷늿헻쇷헖ꎬ streamlining and directing airflow to the compressor. 폃틔헻쇷늢틽떼웸쇷뷸죋톹웸믺뗄랢뚯믺잰뛎ꆣ 106TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING NOSE GEAR, The front wheels with the attachments for 잰웰실볜ꎬ supporting the airplane on the ground. 폃틔퓚뗘쏦횧독량믺뗄잰싖벰웤뢽볾ꆣ NOT, A binary circuit with a single output that is always 럇쏅ꎬ opposite of the single input. Also called an inverter. 듸폐쪼훕폫떥튻쫤죋쿠랴뗄떥튻쫤돶ꆣ튲돆ퟷ랴쿲웷ꆣ NOTCH, An indention that has the shape of a "V". 낼닛ꎬ 튻룶ꆰVꆱퟖ탎뗄좱뿚ꆣ NOZZLE, A shaped device for directing flow in a duct. 엧ퟬꎬ 틽떼맜뗀쓚쇷뚯랽쿲뗄뻟폐쳘뇰탎ힴ뗄ힰ훃ꆣ O O-RING, A circular shaped rubber or synthetic material O탎좦ꎬ sealing device for pneumatic and hydraulic systems. 폃폚웸풴뫍튺톹쾵춳ꎬ풲탎뗄쿰붺믲뫏돉닄쇏훆돉뗄쏜 럢ힰ훃ꆣ OAT, SEE - OUTSIDE AIR TEMPERATURE 췢뷧듳웸컂뛈ꎬ 볻 Outside Air Temperatureꎮ OBSTACLE, An obstruction protruding into the airspace 헏낭컯ꎬ in the path of flight. 뷸죋량탐몽뺶짏뿕폲샯뗄헏낭컯ꆣ OBSTACLE CLEARANCE, The process of flying the 풽헏ꎬ aircraft over all obstructions under the flight path. 량믺량풽웤몽뗀짏쯹폐헏낭컯뗄량탐맽돌ꆣ헏낭컯뗄톡Which obstructions are considered and the amount of 퓱뫍량믺뻠샫헏낭컯뗄룟뛈튪쟳평떱뗘폐맘맜샭믺릹뻶vertical altitude required above the obstructions are 뚨ꆣ determined by local regulatory agency. 107TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING OEW, SEE - OPERATING EMPTY WEIGHT 쪹폃뿕훘ꎬ 볻 Operating Empty Weightꎮ OFFSIDE, Opposite side. 랴쏦ꎬ 쿠랴뗄튻쏦ꆣ OIL COOLER, A heat exchanger for cooling engine oil 뮬폍샤좴웷ꎬ by fuel flow or airflow. 샻폃좼폍믲뿕웸뗄쇷뚯살샤좴랢뚯믺뮬폍뗄죈붻뮻웷ꆣ OIL SEPARATOR, A device used to separate unwanted 뮬폍럖샫웷ꎬ air from engine oil returning to a sump or oil tank. 튻룶쓜듓믘폍닛믲폍쿤랢뚯믺뮬폍훐럖샫돶늻탨튪뗄 뿕웸뗄ힰ훃ꆣ OIL STRAINER, Type of oil filter. 뮬폍즸ꎬ 뮬폍폍싋뗄튻훖ꆣ OLEO STRUT, SEE - SHOCK STRUT 폍튺복헰횧훹ꎬ 볻 Shock Strutꎮ ONSIDE, Same side. 춬쏦ꎬ 쿠춬뗄튻쏦ꆣ OMEGA NAVIGATION SYSTEM (ONS), A worldwide, 냂쏗볓떼몽쾵춳ꎨONSꎩꎬ all weather navigation system. 튻룶좫쟲랶캧쓚좫쳬뫲뗄떼몽쾵춳ꆣ OPEN CIRCUIT, An electrical circuit which is not 뾪슷ꎬ continuous from power supply to ground due to a break 평폚쿟슷훐뛏믲ퟩ볾쯰뮵뛸떼훂듓뗧풴떽뷓뗘뗣횮볤in the wiring or failure of a component. 늻춨뗄뗧슷ꆣ 108TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING OPERATING EMPTY WEIGHT (OEW), The weight of 쪹폃뿕훘ꎨOEWꎩꎬ an airplane fully serviced, including the crew but without 튻볜쟚컱췪뇏뗄량믺ꎬ냼삨뿕쟚죋풱ꎬ떫늻몬좼폍뫍튵fuel and payload. 퓘뗄훘솿ꆣ OPERATING ENVELOPE, Defines the environmental 쪹폃냼쿟ꎬ limits of pressure altitude, temperatures and speed 좷뚨량믺ힼ폨량탐뗄톹솦룟뛈ꆢ컂뛈뫍쯙뛈뗄뮷뺳벫within which the airplane is certified to operate. 쿞ꆣ OPTIMUM ALTITUDE, The cruise altitude which results ퟮ병룟뛈ꎬ in the best fuel mileage. 뿉믱뗃ퟮ병좼폍솨돌뗄톲몽룟뛈ꆣ OR GATE, A device or circuit with two or more inputs of 믲쏅ꎬ binary information and one output. The output is 1 when 뻟폐솽룶믲솽룶틔짏뛾뷸훆탅쾢쫤죋ꎬ뫍튻룶쫤돶뗄ힰany one or more of the inputs is 1. The output is 0 when 훃믲뗧슷ꆣ떱쫤죋뛋폐튻룶믲뛠룶캪싟벭1쪱ꎬ쫤돶캪싟all of the inputs are 0. 벭1ꎻ떱쫤죋뛋뚼캪싟벭0쪱ꎬ쫤돶캪 싟벭0ꆣ ORIFICE, A specified size hole in component for control 솿뿗ꎬ of fluid flow from or to the component. 늿볾짏폃살뿘훆쇷췹믲쇷돶룃늿볾뗄튺쇷뗄돟듧틑좷 뚨뗄뿗ꆣ ORONASAL MASK, An oxygen mask covering only the 뿚뇇헖ꎬ mouth and nose. 뷶헖힡ퟬ뫍뇇ퟓ뗄퇵웸헖ꆣ OSCILLATE, To swing back and forth with a constant 헱떴ꎬ rhythm. 틔뫣뚨뷚싉ퟷ잰뫳뗄튡냚ꆣ 109TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING OUT OF DETENT, A condition away from neutral or a 췑샫뾨떲ꎬ notched position. 닙ퟝ룋샫뾪훐솢믲닛뿚캻훃뗄튻훖ힴ첬ꆣ OUTER LOOP CONTROL, For autopilot operation this 췢믘슷뿘훆ꎬ is control of the airplane's flight path to a target. 폃폚ퟔ뚯볝쪻닙ퟷ뗄뛔량믺량췹쒿뇪뗘뗄몽뺶뿘훆ꆣ샽Examples are control of heading, altitude, and vertical 죧몽쿲ꎬ룟뛈ꎬ뫍뒹횱쯙뛈뗄뿘훆ꆣ speed. OUTER MARKER, A marker beacon located at or near 풶횸뗣뇪ꎬ the glide slope intercept of an ILS approach. The OM is 캻폚믲뾿뷼틇뇭ퟅ슽쾵춳쿂뮬뗀뷘믱뗣뗄튻룶횸뗣탅normally located four to seven miles from the runway 뇪첨ꆣ쯼춨뎣캻폚엜뗀훐탄쿟퇓뎤쿟짏뻠샫엜뗀춷4훁7threshold on the extended centerline of the runway. 몣샯ꆣ OUTFLOW VALVE, A valve in the fuselage for 췢쇷믮쏅ꎬ controlling the airflow from the fuselage to ambient for 믺짭쓚폃틔뿘훆듓믺짭쇷쿲췢뷧듳웸뗄웸쇷틔뷸탐퓶pressurization control. 톹뿘훆뗄믮쏅ꆣ OUTPUT, An information signal going out of a system or 쫤돶ꎬ a part of a system. 듓튻룶쾵춳믲쾵춳뗄튻늿럖돶살뗄탅쾢탅뫅ꆣ OUTSIDE AIR TEMPERATURE (OAT), Ambient, or free 췢뷧듳웸컂뛈ꎨOATꎩꎬ air static temperature. 췢뷧뮷뺳컂뛈믲컞뿕웸뺲뗧뗄컂뛈ꆣ OVERHAUL, To return an aircraft or one of its 랭탞ꎬ components to a like-new or just manufactured 붫량믺믲량믺늿볾탞헻떽뷼쯆좫탂믲훆퓬췪돉쪱뗄ힴcondition. 첬ꆣ OVERRIDE, Operation of a component by a method 뎬뿘ꎬ different from normal operation. 폃늻춬폚헽뎣닙ퟷ뗄랽램살닙ퟷ늿볾ꆣ 110TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING P PACK VALVE, A valve for supplying air and controlling 뿕뗷ퟩ볾믮쏅ꎬ air flow from the pneumatic manifold to the air 평웸풴횧맜쿲뿕뗷쾵춳릩웸늢뿘훆룃웸쇷뗄믮쏅ꆣ conditioning system. PARTICLE, A very small piece of any substance or 캢솣ꎬ physical matter. 죎뫎컯훊믲쪵쳥럇뎣쾸킡뗄튻늿럝ꆣ PASSENGER ADDRESS SYSTEM, A system which 싃뿍맣능쾵춳ꎬ provides flight crew and attendant announcements, 쓜쪹믺ퟩ죋풱쿲뿍닕뷸탐맣능ꆢ능럅틴샖뫍랢돶킳틴탅boarding music, and chime signals to the passenger 뫅뗄쾵춳ꆣ cabin. PASSENGER ENTERTAINMENT SYSTEM, A system 싃뿍폩샖쾵춳ꎬ which can provide audio and/or video entertainment to 쿲싃뿍쳡릩틴욵뫍ꎯ믲쫓욵폩샖럾컱뗄쾵춳ꆣ the passengers. PAYLOAD, That which is carried to the destination, 튵퓘ꎬ such as passengers, cargo, or mail. 평량믺쯍췹쒿뗄뗘뗄퓘훘ꎬ죧돋뿍ꆢ믵컯믲폊볾ꆣ PCA, SEE - POWER CONTROL ACTUATOR 뚯솦뿘훆ퟷ뚯춲ꎬ 볻 Power Control Actuator. PCU, SEE - POWER CONTROL UNIT 뚯솦뿘훆ퟩ볾ꎬ 볻 Power Control Unitꎮ PDCS, SEE - PERFORMANCE DATA COMPUTER 탔쓜쫽뻝볆쯣믺쾵춳ꎬ SYSTEM 볻 Performance Data Computer Systemꎮ 111TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING PEEN, To cause a more corrosion resistant surface by 엧뻅ꎬ multiple impacting it with a hard material such as steel 캪탎돉럀뢯쓜솦룼잿뗄뇭쏦ꎬ뛠듎폃훮죧룖취뗄볡펲닄pellets. Term for this is Shot Peening. 쇏돥믷뇭쏦ꆣ헢룶맽돌쏻캪엧취펲뮯뒦샭ꆣ PERCENT MEAN AERODYNAMIC CHORD (% MAC), 욽뻹웸뚯쿒냙럖뇈ꎬ Defines a position on the aircraft relative to the mean 폃살좷뚨량믺짏튻뗣쿠뛔폚믺틭욽뻹웸뚯쿒뗄캻훃ꆣ aerodynamic chord of the wing. PERCENT N 1 , Expresses the speed of the low N1냙럖쫽ꎬ pressure compressor rotor as a percentage of a fixed 틔튻뚨솿뗄냙럖뇈뛸늻틔쎿튻떥캻쪱볤쫽살뇭쪾뗍amount rather than revolutions per unit time. 톹톹웸믺ퟓ뗄쯙ꆣ PERCENT N2 , Expresses the speed of the high N2냙럖쫽ꎬ pressure compressor rotor as a percentage of a fixed 틔튻뚨솿뗄냙럖뇈살뇭쪾룟톹톹웸믺ퟓ뗄쯙ꆣ amount. PERFORMANCE DATA COMPUTER SYSTEM (PDC, 탔쓜쫽뻝볆쯣믺쾵춳ꎨPDCꎬPDCSꎩꎬ PDCS), A device which provides data to achieve the 튻룶쓜쳡릩쫽뻝ꎬ쪹량믺듯떽ퟮ폐킧뫍ퟮ뺭볃뗄닙ퟷ뗄most efficient and economical operation of the airplane. ힰ훃ꆣ PHASE OF FLIGHT, A portion of flight specifically 량탐뷗뛎ꎬ devoted to accomplishing such things as takeoff, climb, 량탐훐뢺폐튻뚨죎컱ꎨ죧웰량ꆢ엀짽ꆢ톲몽ꆢ쿂붵믲 cruise, descent or landing. ퟅ슽ꎩ뗄늿럝ꆣ 112TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING PHILLIPS HEAD SCREW, A cross point screw with two 쪮ퟖ식쮿뚤ꎬ distinct tapers. Driven with a flat tipped Phillips head 식쮿뗄뚥쏦폐솽룶쏷쿔뗄ힶ탎쪮ퟖ쯄닛뗄식쮿뚤ꆣ평욽screwdriver (see Reed and Prince). 뚥쪮ퟖ춷식쮿ퟪ쟽뚯ꆣ PITCH, The rotation of an airplane around its lateral 뢩퇶ꎬ axis. 량믺죆뫡훡퓋뚯뛸퓬돉믺춷뗄짏쿂퓋뚯ꆣ PITCH AXIS, A horizontal or lateral axis passing 뢩퇶훡ꎬ through the airplane from one side to the other. Airplane 듓량믺튻닠춨쿲쇭튻닠뗄쮮욽훡믲뫡훡ꆣ짽붵뛦뿘훆 nose up and down movement controlled by the 믺춷죆듋훡ퟷ짏쿂뗄퓋뚯ꆣꎨ쮮욽낲뚨쏦퓲폃틔엤욽ꆣꎩ elevators (and stabilizer for trim). PITCH RATE, The rate at which the airplane moves in 뢩퇶싊ꎬ the pitch axis (nose up, nose down). 량믺죆뢩퇶훡퓋뚯ꎨ믺춷쿲짏믲쿲쿂ꎩ뗄쯙싊ꆣ PITOT STATIC TUBE, A tube facing the airstream ퟜ뺲톹맜ꎬ which measures ram and static pressure. Used by 뾪뿚쏦뛔웸쇷틔솿좡뿕웸뗄ퟜ톹뫍뺲톹ꎬ릩량믺틇뇭쪹airplane instruments. 폃뗄맜뗀ꆣ 113TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING PITOT TUBE, A tube facing the airstream which 욤췐맜ꎬ measures ram pressure. 쏦뛔웸쇷틔솿좡뚯톹ꎨ돥톹ꎩ뗄맜ퟓꆣ PLA, SEE - POWER LEVER ANGLE 폍쏅룋뷇뛈ꎬ 볻 Power Lever Angleꎮ PLACARD, An attached sign providing information or 뇪없ꎬ instruction. 쳡릩탅쾢믲쮵쏷뗄뢽쳹뇪횾ꆣ PLENUM, An enlargement in a duct which changes the 헻쇷잻ꎬ flow characteristics of moving air. Used to remove 맜뗀훐폃틔룄뇤퓋뚯웸쇷쳘탔뗄삩듳늿럝ꆣ폃폚쿻돽뿉pulsations caused by variable airflow. 뇤웸쇷틽웰뗄싶뚯ꆣ PLEXIGLAS, A registered trade name. A transparent 폐믺늣솧ꎬ acrylic plastic material used for aircraft windshields and 쫇튻룶힢닡짌욷쏻ꆣ쫇량믺럧떵폫닠럧떵쯹폃뗄춸쏷뇻side windows. JARGON TERM - sheet plastic of several 쾩쯡쯜붺훆욷ꆣ탐볒돆횮캪뛠폃춾뮯톧뫏돉붺욬ꆣ types and used for any purpose. PMC, SEE - POWER MANAGEMENT CONTROL 뚯솦맜샭뿘훆ꎬ 볻 Power Management Controlꎮ PNEUDRAULIC, A system or process which is a 웸뚯튺톹ꎬ combination of hydraulic and pneumatic pressures. 평튺톹뫍웸톹믬뫏췆뚯뗄쾵춳믲맽돌ꆣ PNEUMATIC (NO. 1), Cold air, controlled and/or 톹쯵뿕웸ꎨNOꎮ1ꎩꎬ pressurized. 뺭뿘훆뫍ꎯ믲퓶톹뫳뗄샤뿕웸ꆣ 114TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING PNEUMATIC (NO. 2), Air, controlled and/or 톹쯵뿕웸ꎨNoꎮ2ꎩꎬ pressurized. 뺭뿘훆뫍ꎯ믲퓶톹뫳뗄뿕웸ꆣ POP OUT INDICATOR, A device on a filter which 떯돶횸쪾웷ꎬ protrudes from its housing when a specific differential 맽싋웷뗄튻룶ힰ훃ꆣ떽듯튻뚨뗄톹닮쪱ꎬ쯼믡듓뿇쳥쓚pressure is reached. 짬돶살ꆣ POROSITY, The term for pores or small cavities 웸뿗ꎬ throughout a material. 횸돤싺헻룶컯쳥뗄쾸캢킡뿗믲뿕쾶ꆣ POSITION SHIFT, An FMC operation used to change 틆캻ꎬ the reference of present position. 폃폚룄뇤쿖퓚캻훃믹ힼ뗄량탐맜샭볆쯣믺뗄튻훖닙ퟷꆣ POSITIVE, Definite and intentional. 뿏뚨뗄ꎬ 튻뚨뛸쟒폐틢뗄ꆣ 115TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING POTENTIOMETER, An electrical device for changing 럖톹웷ꎬ the voltage supply to an electrical circuit component. 폃살룄뇤쿲뗧슷늿볾쯹쳡릩횮뗧톹뗄뗧웸ힰ훃ꆣ POWER CONTROL ACTUATOR, A hydraulic actuator 뚯솦뿘훆ퟷ뚯춲ꎬ assembly for operation of flight controls. 폃틔량탐닙ퟝ릤ퟷ뗄튺톹ퟷ뚯춲ퟩ볾ꆣ POWER CONTROL UNIT, A hydraulic actuator 뚯솦뿘훆ퟩ볾ꎬ assembly for operation of flight controls. 폃틔량탐닙ퟝ릤ퟷ뗄튺톹ퟷ뚯춲ퟩ볾ꆣ POWER LEVER ANGLE, The angular scale on the 폍쏅룋뷇뛈ꎬ main engine control for showing movement of the power 훷랢뚯믺뿘훆짏폃틔횸쪾폍쏅룋퓋뚯뗄뷇뿌뛈ꆣ (throttle) lever. POWER MANAGEMENT CONTROL, An electronic 뚯솦맜샭뿘훆ꎬ engine control. 뿘훆랢뚯믺뗄뗧ퟓힰ훃ꆣ POWER TRANSFER UNIT, A hydraulic motor/pump for 뚯솦뮻ힰ훃ꎬ supplying hydraulic power to components when normal 떱컞헽뎣뗄튺톹살풴뿉릩쪹폃쪱ꎬ폃살쿲늿볾쳡릩튺톹supply is not available. 뚯솦뗄튺톹십듯ꎯ뇃ꆣ PRECOOLER, A heat exchanger in the pneumatic 풤샤웷ꎬ system for cooling engine bleed air before it is supplied 퓚웸풴쾵춳훐뗄튻룶죈붻뮻웷ꆣ쯼붫랢뚯믺틽웸샤좴뫳to the pneumatic manifold. 릩룸웸풴ퟜ맜ꆣ 116TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING PRECISION APPROACH PROCEDURE, A standard 뺫쏜뷸뷼돌탲ꎬ instrument approach procedure in which an electronic 벺쳡릩폐뗧ퟓ쿂뮬뗀ꎯ쿂뮬몽뺶뗄뇪ힼ틇뇭뷸뷼돌탲ꆣ glide slope/glide path is provided; ., ILS/MLS and 죧ꎺ틇뇭ퟅ슽쾵춳ꎯ캢늨ퟅ슽쾵춳ꎬ틔벰뺫쏜뷸뷼샗듯ꆣ PAR. PRESSURE, Force per unit area usually measured in 톹솦ꎬ pounds per square inch (psi). 떥캻쏦믽짏뗄솦ꆣ춨뎣폃냵ꎯ욽랽펢듧ꎨpsiꎩ살뛈솿ꆣ PRESSURE ALTITUDE, The altitude displayed when 톹솦룟뛈ꎬ the barometric pressure on the altimeter is set to 떱룟뛈뇭짏뗄웸톹뗷훁29ꎮ92펢듧릯훹쪱쿔쪾뗄룟뛈ꆣ inches of mercury. PRESSURE REGULATING AND SHUTOFF VALVE, A 톹솦뗷뷚뫍맘뛏믮쏅ꎬ valve in the pneumatic system for regulating bleed air 웸풴쾵춳훐폃틔뗷뷚듓랢뚯믺떽웸풴ퟜ맜뗄틽웸톹솦 pressure from the engine to the pneumatic manifold. 뗄믮쏅ꆣ PRINTED CIRCUIT CARD, A plastic or fiberglass card 펡쮢뗧슷냥ꎬ with electronic components and copper strips forming a 평뗧ퟓ늿볾뫍춭쮿쯹ퟩ돉뗧슷뗄쯜붺믲쿋캬늣솧훆 circuit. 놡냥ꆣ PRIORITY VALVE, A valve in the hydraulic system for 폅쿈믮쏅ꎬ operation of components in proper sequence. 튺톹쾵춳훐ꎬ폃살쪹룷늿볾헕뫏쫊쮳탲닙ퟷ뗄믮쏅ꆣ PROCEDURE TURN, A maneuver where it is 돌탲췤ꎬ necessary to reverse direction to establish the airplane 퓚량믺뇘탫랴쿲붨솢ퟮ뫳뷸뷼몽뗀쪱쯹ퟶ뗄믺뚯뚯ퟷꆣ on the final approach course. 117TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING PROXIMITY SENSOR, An electromagnetic device that 쇚뷼뒫룐웷ꎬ senses the position of a moving actuator. The sensor 쓜릻룐횪퓋뚯훐뗄ퟷ뚯춲캻훃뗄뗧듅ힰ훃ꆣ룃뒫룐웷 has two or three wires. 폐솽믲죽룹뗧쿟ꆣ PROXIMITY SENSOR ACTUATOR, A steel plate 쇚뷼뒫룐웷ퟷ뚯웷ꎬ located on a moving component for operation of 캻폚튻룶퓋뚯늿볾짏ꎬ폃틔닙ퟷ쇚뷼뒫룐웷뗄룖냥ꆣ proximity sensor. PROXIMITY SWITCH, A printed circuit card for 쇚뷼뗧쏅ꎬ transmitting sensor signals to indicating lights and 폃틔붫뒫룐웷탅뫅뒫쫤룸횸쪾뗆뫍뗧슷뗄펡쮢뗧슷냥ꆣ circuits. 118TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING PRSOV, SEE - PRESSURE REGULATING AND 뗷톹뫍맘뛏믮쏅ꎬ SHUTOFF VALVE 볻 Pressure Regulating and Shutoff Valveꎮ PTU, SEE - POWER TRANSFER UNIT 뚯솦뮻ힰ훃ꎬ 볻 Power Transfer Unitꎮ PURGE VALVE, A valve in the pneumatic system for 돽뎾믮쏅ꎬ removal of dirt from the air cleaner. 웸풴쾵춳훐폃틔쟥돽뿕웸쟥뷠웷훐횮믒뎾뗄믮쏅ꆣ PYLON, A structural component for supporting an 뗵볜ꎬ engine from the wing. 폃틔듓믺틭횧독랢뚯믺뗄뷡릹볾ꆣ Q QAD, SEE - QUICK-ATTACH-DETACH 뿬쯙ힰ킶ꎬ 볻 QuickꎭAttachꎭDetachꎮ QEC, SEE - QUICK ENGINE CHANGE 뿬쯙룼뮻랢뚯믺ꎬ 볻 Quick Engine Changeꎮ QFE, Altimeter setting which causes altimeter to read 뎡쏦웸톹ꎬ height above airport elevation. 쪹룟뛈뇭횸쪾량믺뻠믺뎡뇪룟횮룟뛈뗄룟뛈뇭짨뚨ꆣ QNE, Altimeter setting inches of mercury, 뇪ힼ룟뛈뇭짨뚨ꎬ Hectopascals or millibars. 29ꎮ92펢듧릯훹ꎬ1013ꎮ2냙엁쮹뾨ꎬ믲1013ꎮ2뫁 냍뗄룟뛈뇭짨뚨ꆣ QNH, Altimeter setting which causes altimeter to read 탞헽몣욽쏦웸톹ꎬ height above mean sea level. 쪹룟뛈뇭횸쪾량믺뻠욽뻹몣욽쏦횮룟뛈뗄룟뛈뇭짨뚨ꆣ 119TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING QUADRANT, A mechanical component shaped like a 질탎엌ꎬ quarter of circle for transmitting cable motion in airplane 량믺닙ퟝ쾵춳쓚ꎬ폃틔뒫뗝닙ퟝ룖쯷퓋뚯뗄질탎ꎨ쯄 control systems. 럖횮튻풲ꎩ믺킵늿볾ꆣ QUENCH, A heat treating process to make the surface 듣믰ꎬ of a metal hard. The metal is taken from the furnace and 튻훖쪹뷰쫴뇭쏦펲뮯뗄죈뒦샭맽돌ꆣ룖쳺듓죛슯샯놻좡dipped in a liquid such as oil or water. 돶뫳퓙놻엝뷸폍믲쮮뗈튺쳥훐ꆣ QUICK ENGINE CHANGE KIT, A collection of 뿬쯙룼뮻랢뚯믺돉쳗짨놸ꎬ components allowing installation of a basic engine on to 폃틔뿬쯙뗘붫튻첨믹놾랢뚯믺낲ힰ퓚튻훖믺탍뗄죎뫎any of the engine positions of a particular model 랢뚯믺캻훃뗄쯹폐늿볾뗄벯뫏ꆣ airplane. QUICK-ATTACH-DETACH, A clamp for attaching 뿬쯙ힰ킶ꎬ accessories (hydraulic pump, fuel pump, starter) to the 폃틔붫뢽볾ꎨ죧튺톹뇃ꎬ좼폍뇃ꎬ웰뚯웷뗈ꎩ뷓떽랢뚯engine accessory gearbox. 믺뢽볾돝싖쿤짏뗄볐뻟ꆣ QUICK TURNAROUND LIMITS, Established the 뿬쯙훜벫쿞ꎬ minimum amount of time to cool the wheel brakes 퓚쿂튻룶웰량탭뿉횮잰ꎬ틑좷뚨뗄량믺싖즲뎵뗄ퟮ짙샤before the next take off is permitted. 좴쪱볤ꆣ 120TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING QUIESCENT, Condition of an electrical circuit when no 볅뺲ힴ첬ꎬ input signal is applied to it. 뗧슷짏쎻폐쫤죋탅뫅뗄ힴ첬ꆣ R RACK, A place for storage of modules in the 횧볜ꎬ electrical/electronic equipment compartment. 뗧웸ꎯ뗧ퟓ짨놸닕쓚ꎬ폃틔듦럅ퟩ볾뗄뗘랽ꆣ RADAR, A device which measures the time between the 샗듯ꎬ transmission and reception of radio pulses and provides 닢솿컞쿟뗧싶돥듓뒫쫤떽뷓쫕쯹탨뗄쪱볤ꎬ늢쳡릩랶information on range, azimuth, and/or elevation of 캧ꎬ랽캻ꎬ뫍ꎯ믲싶돥탅뫅뒫쫤춾뺶짏컯쳥뇪룟뗄ힰ훃ꆣ objects in the path of the transmitted pulses. RADAR VECTORS, Headings given to the pilot from a 샗듯틽떼ꎬ controller using radar. 평쪹폃샗듯뗄뿕훐붻춨맜훆풱룸폨량탐풱뗄몽쿲ꆣ RADIAL, A magnetic bearing extending from a 뺶쿲쿟ꎬ VORNORTACITACAN navigation facility. 평짵룟욵좫쿲탅뇪/쯾뾵솪뫏뚨캻ꎯ쯾뾵쾵춳떼몽짨 쪩랢짤돶살뗄듅랽캻쿟ꆣ RADIO ALTITUDE (HEIGHT) (RA), The distance of an 컞쿟뗧룟뛈ꎨRAꎩꎬ aircraft above the ground, as determined by a radio 평컞쿟뗧룟뛈뇭쾵춳닢뚨뗄량믺폫뗘쏦뗄뻠샫ꆣ altimeter system. RAM, SEE - RANDOM ACCESS MEMORY 쯦믺듦좡듦뒢웷ꎬ 볻 Random Access Memory RAM AIR, Outside air that flows through heat 돥톹뿕웸ꎬ exchangers in the air conditioning packs. 쇷맽뿕뗷ퟩ볾죈붻뮻웷뗄췢뷧뿕웸ꆣ 121TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING RAM AIR TURBINE, A device which extends from the 돥톹뿕웸컐싖ꎬ side of the fuselage, driven by outside airflow for 듓믺짭튻닠짬돶ꎬ평췢뷧웸쇷쟽뚯ꎬ틔퓚뷴벱쟩뿶쿂쳡emergency supply of hydraulic or electric power. 릩튺톹믲뗧풴뗄ힰ훃ꆣ RANDOM ACCESS MEMORY, A type of memory in 쯦믺듦좡듦뒢웷ꎬ which the data can be written into and read out of. 튻훖뿉틔붫쫽뻝볇퓘뫍뛁돶뗄듦뒢웷ꆣ튻냣폃ퟷ뛌웚듦Normally used for short term memory. 뒢ꆣ RAT, SEE - RAM AIR TURBINE 돥톹뿕웸컐싖ꎬ 볻 Ram Air Turbineꎮ RATIO, A specific relationship between one number 뇈싊ꎬ value and another. 튻룶쫽횵폫쇭튻룶쫽횵횮볤뗄튻훖쳘쫢맘쾵ꆣ RATIO CHANGER, A mechanical device for changing 뇈싊뮻웷ꎬ output speed or movement relative to input speed or 폃틔룄뇤쫤돶쯙뛈믲퓋뚯폫쫤죋쯙뛈믲퓋뚯횮볤뇈싊movement. 뗄믺킵ힰ훃ꆣ RAW DATA, Data from sensors not modified by the user 풭쪼쫽뻝ꎬ system. 쎻폐뺭쪹폃쾵춳ퟷ죎뫎탞헽뗄ꎬ평뒫룐웷뗃살뗄쫽뻝ꆣ 122TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING READ-ONLY MEMORY, A memory unit in which 횻뛁듦뒢웷ꎬ instructions or data are permanently stored for use by 몬폐평볆쯣믺폀뻃듦뒢ퟅ뗄횸쇮믲쫽뻝뗄듦뒢웷ꆣ퓚튻the computer. Under normal conditions the stored 냣쟩뿶쿂늻쓜뛔듦뒢탅쾢ퟷ죎뫎뗄탞룄ꆣ information cannot be changed. RECEPTACLE, One half of a two-piece connector. It is 닥ퟹꎬ usually mounted on a support, such as a panel. 평솽볾ퟩ돉뗄솬뷓웷뗄튻냫ꆣ뎣놻낲ힰ퓚횧볜짏ꆣ 죧ꎺ틇뇭냥ꆣ RECIRCULATED AIR, Conditioned air mixed with air 퓙톭뮷뿕웸ꎬ from the passenger compartment. 뗷훆뫳뗄뿕웸폫뿍닕살뗄뿕웸횮믬뫏ꆣ REDUCED THRUST, A thrust level less than maximum 복췆솦ꎬ rated thrust. 뇈ퟮ듳뛮뚨췆솦킡뗄튻룶췆솦벶ꆣ REED AND PRINCE SCREW, A cross point screw with 쪮ퟖ식쮿뚤ꎬ a single straight line taper driven with a pointed tipped 폫볢춷쪮ퟖ식탽ퟪ엤쳗쪹폃뗄ꎬ듸폐튻쳵횱쿟ힶ뗄쪮ퟖReed and Prince screwdriver. (See Phillips Head.) 춷식쮿뚤ꆣ RED SWITCH, A switch with two magnetic plates acting 짠믉뗧쏅ꎬ as contacts and operated by a magnet. 평튻룶듅쳥뿘훆쪹솽욬듅욬뷓뒥뗄뗧쏅ꆣ 123TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING REFERENCE LINE, A line used in a chart as the 믹ힼ쿟ꎬ starting point for applying corrections to chart input 퓚춼뇭훐폃ퟷ탞헽춼뇭쫤죋횵뗄웰뗣뗄쿟ꆣ쪹폃쪱뿉폃values. One or more reference lines may be used in 튻쳵믲솬탸쪹폃뛠쳵ꆣ succession. REFUSED TAKEOFF, A takeoff which has been 훐뛏웰량ꎬ stopped before the airplane lifts off the ground. 퓚량믺샫뗘잰놻춣횹뗄웰량ꆣ REGULATING VALVE, A valve for controlling pressure 뗷뷚믮쏅ꎬ or flow. 폃틔뿘훆톹솦믲쇷솿뗄믮쏅ꆣ RELAXED, The state of an electrical component or 쫍럅ힴ첬ꎬ switch that is deenergized. 뗧웷늿볾믲뗧쏅뒦폚맘뇕믲쎻폐춨뗧뗄ힴ첬ꆣ RELAY, A switching device in which the contacts are 볌뗧웷ꎬ opened or closed in response to separate current or 튻훖뗧쏅ힰ훃ꎬ웤뷓뒥뗣쯦ퟅ떥뛀뗄뗧쇷믲뗧톹뾪슷믲voltage. 뇕뫏ꆣ RELIEF VALVE, A valve which prevents high pressure 쫍톹믮쏅ꎬ in a system by venting the system to ambient. 춨맽붫쾵춳폫췢뷧쿠춨ꎬ틔럀쾵춳쓚톹솦맽룟뗄믮쏅ꆣ 124TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING RESERVES, The required fuel remaining on-board after 놸폃좼폍ꎬ arriving at the destination airport as determined by 헕맦뚨ꎬ량믺퓚떽듯쒿뇪믺뎡뫳ꎬ믺짏탨튪뗄쪣폠뗄좼regulations. 폍ꆣ RESERVOIR, A container for storage of fluid. 뒢튺쿤ꎬ 폃틔뒢듦튺쳥뗄죝웷ꆣ RESTRICTOR, An orifice for reducing the flow and 쿞쇷웷ꎬ pressure of a fluid. 폃틔복뗍튺쳥쇷솿뫍톹솦뗄솿뿗ꆣ RESTRICTOR CHECK VALVE, Same as restrictor but 쿞쇷떥쿲믮쏅ꎬ allowing flow in one direction only. 튻룶폫쿞쇷웷샠쯆ꎬ떫뷶퓊탭쇷쳥쿲떥튻랽쿲쇷뚯뗄믮 쏅ꆣ RETARD, An autothrottle mode used to decrease the 삭믘폍쏅ꎬ engine thrust to idle. ퟔ뚯폍쏅뗄튻훖랽쪽ꆢ폃폚붫랢뚯믺췆솦복킡훁싽뎵ힴ 첬ꆣ REVERSION, To change to a pre-determined mode. 뢴풭ꎬ 룄믘떽풤뚨뗄랽쪽ꆣ RHEOSTAT, An electrical device for changing the 뇤ퟨ웷ꎬ resistance in an electrical circuit. 폃틔룄뇤뗧슷쓚뗧ퟨ뗄뗧웸ힰ훃ꆣ 125TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING RIB, A structural member of airfoil shape in wing, 틭샟ꎬ stabilizer or control surface. 믺틭ꆢ낲뚨쏦믲닙ퟝ쏦쓚뻟폐틭웊쏦탎ힴ뗄뷡릹풪볾ꆣ RIG PIN, A metal pin for inserting into a moveable 킣ힰ쿺ꎬ component before adjusting the control cables and 퓚뗷헻닙ퟝ룖쯷뫍솴쾵횮잰ꎬ닥퓚뿉뚯늿볾쓚뗄뷰쫴linkage. 쿺ꆣ RIGGING, An adjustment of airplane controls and doors 킣ힰꎬ for proper operation. 쪹량믺닙ퟝ쾵춳뫍닕쏅쓜헽뎣릤ퟷ뛸ퟶ뗄ힰ엤뗷헻ꆣ RISER, A duct in the air conditioning system for 솢맜ꎬ conditioned air supply to the passenger cabin. 뿕뗷쾵춳훐ꎬ붫뗷뷚뫃뗄뿕웸쯍떽뿍닕뗄맜뗀ꆣ 126TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING ROD END (NO. 1), In a hydraulic actuator, reference to 솬룋뛋ꎬ the part opposite to the piston side of the actuator. 튺톹ퟷ뚯춲믮죻솬룋짬돶뗄튻뛋ꆣ ROD END (NO. 2), A mechanical device usually a 룜룋뛋ꎬ bearing, clevis or similar component attached to the end 튻룶솬퓚믮뷚솬룋튻뛋믲췆삭룋튻뛋뗄춨뎣쫇훡돐ꎬ of a link or push-pull type rod. 뗵뮷ꎬ믲샠쯆풪볾뗄믺킵ힰ훃ꆣ ROLL, The rotation of an airplane around its longitudinal 뫡맶ꎬ axis. 량믺폃ퟝ훡ퟷ캪탽훡쪱뗄퓋뚯ꆣ ROLL AXIS, SEE - LONGITUDINAL AXIS 뫡맶훡ꎬ 볻 Longitudinal Axisꎮ 127TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING ROLL RATE, The rate at which the airplane moves 뫡맶싊ꎬ on the roll axis (wing up, wing down). 량믺죆뫡맶훡퓋뚯ꎨ믺틭쿲짏믲쿲쿂ꎩ뗄쯙싊ꆣ ROLLOUT, The final phase of landing where the ퟅ슽뮬엜ꎬ airplane is slowing down on the runway. 량믺ퟅ슽뗄ퟮ뫳뷗뛎ꆣ듋쪱량믺퓚엜뗀짏복쯙ꆣ ROM, SEE - READ ONLY MEMORY 횻뛁듦뒢웷ꎬ 볻 Read Only Memory ROTARY VARIABLE DIFFERENTIAL TRANSDUCER, 탽뿉뇤닮뚯뒫룐웷ꎬ A device with a rotary input and a linear response. 튻룶뻟폐탽쫤죋뫍쿟탔룐펦뗄ힰ훃ꆣ ROTATE, A maneuver conducted during the takeoff 첧잰싖ꎬ ground roll. At the rotation speed, the pilot pulls back on 량믺퓚웰량뮬엜웚볤쯹ퟶ뗄믺뚯뚯ퟷꆣ퓚량믺듯떽첧잰the control column to raise the nose of the airplane into 싖쯙뛈쪱ꎬ량탐풱쿲뫳듸닙ퟝ룋ꎬ믺춷짏퇶ꎬ잰싖샫뗘ꆣ the air. ROTOR, A rotating section of an engine (turbine, ퟓꎬ compressor) or a generator. 랢뚯믺ꎨ컐싖ꆢ톹웸믺ꎩ믲랢뗧믺뗄뚯늿럝ꆣ ROUTE DISCONTINUITY, An FMC operational 몽슷늻솬탸ꎬ condition, in which parts of a route are not joined or 튻훖량탐맜샭볆쯣믺뗄닙ퟷힴ뿶ꎬ몽슷폐킩늿럝늻쿠솬connected. 믲늻쿠춨ꆣ ROUTE LEGS, The portion of a route which connects 몽슷뛎ꎬ two way-points together. 붫솽룶몽슷뗣솬뷓웰살뗄몽슷뗄튻뛎ꆣ 128TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING RUDDER, A hinged moveable part on the trailing edge 랽쿲뛦ꎻ of the vertical stabilizer for airplane yaw (left and right) 뷂솬퓚뒹횱낲뚨쏦뫳풵짏ꎬ폃틔닙ퟝ량믺욫몽ꎨ믺춷쿲control. ퟳ믲쿲폒ꎩ뗄뿉뚯늿볾ꆣ RUNWAY VISUAL RANGE (RVR), The horizontal 엜뗀쫓돌ꎨRVRꎩꎬ distance a pilot can see down the runway when flying an 량믺뷸뎡쪱ꎬ량탐풱쿲엜뗀랽쿲췻좥쯹쓜뾴떽뗄쮮욽뻠approach. 샫ꆣ RUST, The oxidation of iron and iron containing metals. 쳺탢ꎬ It is usually a reddish brown color. 쳺뫍쳺샠컯훊뗄퇵뮯컯ꆣ뎣캪뫖뫬즫ꆣ RVDT, SEE - ROTARY VARIABLE DIFFERENTIAL 탽뿉뇤닮뚯뒫룐웷ꎬ TRANSDUCER 볻 Rotary Variable Differential Transducer. S SAFETY RELIEF VALVE, A valve in the pressurization 낲좫쫍톹믮쏅ꎬ system for reducing cabin pressure to a safe operating 퓚퓶톹쾵춳훐ꎬ쪹ퟹ닕톹솦복뗍훁튻룶낲좫뗄릤ퟷ톹솦pressure. 뗄믮쏅ꆣ SAT, SEE - STATIC AIR TEMPERATURE 뺲컂ꎬ 볻 Static Air Temperatureꎮ 129TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SCAVENGE, To remove oil from the engine bearings or 믘폍ꎬ to remove water/fuel by a pump from a tank. 돽좥랢뚯믺훡돐뗄뮬폍ꎬ믲폃뇃살돽좥폍쿤쓚뗄쮮뫍좼 폍ꆣ SCHEDULE GENERATOR, An electronic component in 돌탲닺짺웷ꎬ the pressurization system for controlling the operation of 퓚퓶톹쾵춳훐ꎬ폃살뿘훆췢쇷믮쏅릤ퟷ뗄뗧ퟓ늿볾ꆣ the outflow valve. SCHRAEDER VALVE, A valve for inflation of tires, Schraeder믮쏅ꎬ struts and accumulators and for pressurizing the water Schraeder릫쮾돶욷뗄튻훖믮쏅ꎬ폃틔캪싖첥ꆢ복헰횧tank from outside. 훹뫍탮톹웷돤웸ꎬ튲폃폚듓췢쏦캪쮮쿤퓶톹ꆣ SCR, SEE - SILICON CONTROLLED RECTIFIER 맨뿉뿘헻쇷웷ꎬ 볻 Silicon Controlled Rectifierꎮ SCRATCH PAD, An area on the FMCS control display 닝룥삸ꎬ unit used for showing characters activated by the FMCS쿔쪾웷짏뗄튻룶쟸폲ꎬ폃폚쿔쪾평폮쒸ꆪ쫽ퟖ볼alphanumeric keys. 엌벤랢뗄ퟖ럻ꆣ SCSI, SEE - SMALL COMPUTER SYSTEM 킡탍볆쯣믺쾵춳뷓뿚ꎬ INTERFACE 볻 Small Computer System Interfaceꎮ SCUPPER, A shallow receptacle around a filler neck of 럅킹뿗ꎬ a liquid tank to catch any overflow or spillage from the 튺쳥쿤뗄볓힢뻗뇟쯹ힰ훃뗄킡탍죝웷ꎬ폃폚뷓좡쟚컱맽servicing operation. The scupper is normally fitted with a 돌훐죎뫎틧쇷뗄튺쳥ꆣ튻냣뚼ힰ폐춨쿲믺닕췢뗄업킹맜drain overboard. 뗀ꆣ SEA LEVEL, The standard datum plane from which 몣욽쏦ꎬ altitude is measured. 폃ퟷ룟뛈닢솿믹ힼ뗄뇪ힼ욽쏦ꆣ 130TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SEA LEVEL STATIC THRUST, Maximum rated power 몣욽쏦뺲췆솦ꎬ produced by a stationary jet engine during ambient 퓚몣욽쏦뮷뺳ힴ첬ꎨ듳웸컂뛈ꆢ톹솦ꎩ쿂ꎬ튻첨만뚨힡conditions at sea level. 뗄엧웸랢뚯믺쯹닺짺뗄ퟮ듳췆솦ꆣ SEAL, A component between two surfaces for 럢퇏ꎬ preventing air or fluid leakage. 퓚솽뇭쏦볤럀횹뿕웸믲튺쳥킹슩뗄풪볾ꆣ SECTOR, A given distance between two checkpoints in 몽뛎ꎬ the flight plan. 량탐볆뮮훐ꎬ솽룶볬닩뗣횮볤뗄틑횪뻠샫ꆣ SELCAL, SEE - SELECTIVE CALLING 톡퓱뫴뷐ꎬ 볻Selective Calling. SELECTIVE CALLING, A system that automatically 톡퓱뫴뷐ꎬ alerts the flight crew to a call from the airline ground 튻룶쓜ퟔ뚯붫몽뿕릫쮾뗘쏦햾뫴뷐놨횪믺ퟩ뗄쾵춳ꆣ station. SELECTOR VALVE, A valve in the hydraulic system for 톡퓱믮쏅ꎬ connecting hydraulic supply to one side of the actuator 튺톹쾵춳훐ꎬ폃폚붫튺톹풴튻뛋솬뷓ퟷ뚯볲ꎬ쇭튻뛋솬and the other side to the return line. 뷓믘폍뛋뗄믮쏅ꆣ 131TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SELF SEALING COUPLING, A connection between two ퟔ럢뷓춷ꎬ fluid filled hoses for preventing fluid loss when the hoses 폃틔솬뷓솽룶돤싺튺쳥뗄죭맜뗄쳘훆뷓춷ꆣ퓚솽룶맜ퟓare separated. 럖뾪쪱ꎬ뷓춷쓚뗄떯믉벴쪹믮쏅뛂힡춨뗀ꎬퟔ뚯럢뇕뛸늻 죃튺쳥쇷돶ꆣ SEMI-MONOCOQUE, Type of construction in which the 냫펲뿇쪽뷡릹ꎬ skin, stringers and frames carry all the loads. 쪹쏉욤ꎬ뎤뫍룴뿲릲춬돐쫜쯹폐퓘뫉뗄릹퓬탎쪽ꆣ SENSOR, An electrical device for detecting variable 뒫룐웷ꎻ conditions and sending a signal to indicators and lights. 볬닢뇤솿ힴ뿶늢붫뷡맻틔탅뫅쯍훁횸쪾웷뫍횸쪾뗆뗄 뗧웸ힰ훃ꆣ SENSOR ACTUATOR, A device for operating the 뒫룐웷훂뚯웷ꎬ sensor. 폃틔닙ퟷ뒫룐웷뗄ힰ훃ꆣ SERVO, An automatic control system which checks its 쯅럾쾵춳ꎬ output against its input so as to achieve a desired 쓜볬닩쫤돶뫍쫤죋쫽뻝ꎬ틔뇣뫏쫊뗷뿘뗄ퟔ뚯뿘훆쾵control. 춳ꆣ SERVO ARMED, Hydraulic pressure for the servo is 쯅럾풤캻ꎬ present to allow the servo to internally synchronize to 튺톹쪹쯅럾쾵춳쓚늿춬늽훁쫊떱뗄캻훃ꎬ떫쯅럾쾵춳뗄the proper position, but the mechanical output of the 믺킵쫤돶뮹쎻폐뷓춨ꆣ servo is not connected. 132TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SERVO ENGAGED, The mechanical output of the 쯅럾쾵춳풤캻ꎬ servo is connected and the servo can move a surface or 쯅럾쾵춳뗄믺킵쫤돶폫쯅럾쾵춳틑뷓춨ꎬ쯅럾쾵춳뿉틆control 뚯튻룶욽쏦믲닙ퟝꆣ SET SCREW, A small screw (usually headless) used to 뚨캻식쮿뚤ꎬ fasten a pulley, wheel, or knob onto a shaft and prevent 킡식쮿뚤ꎨ튻냣쫇쎻폐뚤춷뗄ꎩ폃폚붫뮬싖ꎬ뎵싖ꎬ믲rotation. 탽얥뷴만퓚훡싖짏놻쏢뚯ꆣ SG, SEE - SYMBOL GENERATOR 럻뫅랢짺웷ꎬ 볻 Symbol Generatorꎮ SHEAR, The stress exerted on a material or, assembly 보쟐솦ꎬ which tends to slide the mating surfaces parallel to each 볓퓚닄쇏믲ퟩ볾짏뗄펦솦ꆣ룃솦췹췹떼훂뮥쿠욽탐뗄돉other. 뛔뇭쏦뮬뚯ꆣ SHIMMY, Rapid oscillations (left-right) of the landing 냚헱ꎬ gear wheels. 웰실볜싖ퟓ뗄뿬쯙뗄ퟳ폒냚뚯ꆣ 133TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SHIMMY DAMPER, A hydraulic device for damping 복냚웷ꎬ shimmy in the landing gear wheels. 폃틔뮺돥웰실볜싖ퟓ냚헱뗄튺톹ힰ훃ꆣ SHOCK STRUT, A component in the landing gear for 복헰횧훹ꎬ absorbing landing shock by transferring oil from one 웰실볜짏춨맽볆솿믮쏅붫폍튺듓튻쫒떽쇭튻쫒틔복chamber to another through a metering valve. 짙ퟅ슽쪱닺짺뗄돥믷헰뚯뗄늿볾ꆣ 134TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SHORT CIRCUIT, A fault in an electrical circuit 뛌슷ꎬ occurring when the power supply goes directly to 뗧슷훐뗧풴캴뺭뗧웸늿볾뻍횱뷓떽뗘쿟쪱뗄뗧슷맊헏ꆣ ground instead of to an electrical component. SHORT RANGE ALTITUDE, A cruise altitude chosen to 뛌돌룟뛈ꎬ minimize fuel burn during short trips. 캪퓚뛌춾량탐훐쪹폃ퟮ짙좼폍뛸톡뗄톲몽룟뛈ꆣ SHROUD, A metal covering for enclosing the APU on 럀뮤헖ꎬ the airplane. An external tube for enclosing a fuel hose. 량믺짏냼캧ퟅ뢨훺뚯솦ힰ훃뗄뷰쫴헖ꆣ냼캧ퟅ좼폍죭맜 뗄췢맜ꆣ SHUTTLE VALVE, A valve in the hydraulic system with 솽폃믮쏅ꎬ two different hydraulic supplies and one output to a 튺톹쾵춳훐ꎬ뻟폐솽룶늻춬튺톹쫤죋맜뫍튻룶쫤돶맜 component. 뗄믮쏅ꆣ SID, SEE - STANDARD INSTRUMENT DEPARTURE 뇪ힼ틇뇭샫뎡ꎬ 볻Standard Instrument Departureꎮ SIDE COWL, A removable cover around the sides of the 닠헻쇷헖ꎬ engine for access to the components on the engine. 랢뚯믺솽닠ꎬ놻틆뾪뫳뿉틔릻떽랢뚯믺늿볾뗄뿉킶헖ퟓꆣ 135TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SIGHT GLASS, A glass window for observing fluid 볬닩뒰ꎬ quantity in the reservoir of a machine. 폃틔맛달믺웷뗄뒢튺쿤쓚튺솿뗄늣솧뒰ꆣ SIGNAL, An electrical quantity, such as a current or 탅뫅ꎬ voltage, that can be used to transport information for 뗧솿뗄튻훖ꆣ죧뗧쇷믲뗧톹쓜폃폚뒫쯍ꆢ춨톶ꆢ뿘훆믲communication, control, or calculation. 볆쯣탨튪뗄탅쾢ꆣ SILICON CONTROLLED RECTIFIER, An electronic 맨뿘헻쇷웷ꎬ device allowing current flow in one direction after the 떱웤뿘훆벫쫜떽싶돥뫳ꎬ퓊탭뗧쇷쿲떥튻랽쿲쇷뚯뗄뗧device has been pulsed at the gate. ퟓힰ훃ꆣ SINGLE SHOT MULTIVIBRATOR, An electrical circuit 돥쾢뛠킳헱떴웷ꎬ which produces a pulse when triggered by an input 떱튻룶쫤죋탅뫅뒥랢뗧슷쪱닺짺뗄싶돥뗄뗧슷ꆣ폖돆떥signal; a mono-stable multivibrator. 컈첬뛠킳헱떴웷ꆣ 136TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SIMPLIFIED FLIGHT PLANNING, Rapid determination 볲뮯량탐볆뮮ꎬ of trip time and fuel using a chart providing these data 평쳡릩싃춾쪱볤뫍좼폍뗈쇏뗄춼뇭ꎬ살톸쯙뚨돶듓쯉for the entire flight profile from brake release to landing. 즲뎵떽ퟅ슽뗄헻룶량탐쯹탨뗄쪱볤뫍좼폍뗄맽돌ꆣ SLANT RANGE, The line-of-sight distance between two 킱뻠ꎬ points not at the same elevation. 늻퓚춬튻룟뛈뗄솽뗣횮볤뗄횱쿟뻠샫ꆣ SLAT, A moveable part on the leading edge of the wing 러틭ꎬ for increasing lift at low airplane speeds. 폃틔퓚뗍쯙량탐쪱퓶볓량믺짽솦뗄믺틭잰풵뿉뚯늿볾ꆣ 137TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SLOPE, The amount of incline a runway surface has 킱뛈ꎬ relative to absolute level. 엜뗀뇭쏦쿠뛔폚욽쏦뗄쟣킱솿ꆣ SLUSH, Runway contamination made up of a mixture of 톩쓠ꎬ water, snow and ice. 믽퓚엜뗀짏몬폐뇹ꆢ톩ꆢ뫍쮮뗄믬뫏컛좾컯ꆣ SMALL COMPUTER SYSTEM INTERFACE, An input 킡탍볆쯣믺쾵춳뷓뿚ꎬ and output bus that provides a standard interface 튻룶쓜퓚볆쯣믺폫훜캧ힰ훃짨쪩횮볤릩룸춳튻뷓뿚뗄between a computer and peripheral devices. 쫤죋뫍쫤돶ퟜ쿟ꆣ SMOKE DETECTOR, A device whereby the flight crew 퇌컭첽닢웷ꎬ can be made aware of smoke or fire in specific areas of 퓚믺닕믲죎뫎횸뚨쟸폲쓚쓜닢떽퇌컭믲믰늢놨횪믺ퟩ the aircraft. 죋풱뗄ힰ훃ꆣ SNUBBER, A part of a hydraulic actuator that slows 뮺돥웷ꎬ piston speed by restricting flow. 튺톹ퟷ뚯춲훐뻟폐뷚쇷뿗뗄늿럝ꆣ헢킩킡뿗쓜춨맽쿞훆 튺폍ꎬ틔복뗍믮죻쯙뛈ꆣ SOFTWARE, The stored instructions that control the 죭볾ꎬ operations of a computer. 뒢듦퓚볆쯣믺뗄횸쇮돌탲ꆣ폃살뿘훆볆쯣믺쾵춳뗄릤 ퟷꆣ SOLENOID, An electro-mechanical device for operating 뗧듅쿟좦ꎬ other devices. 폃틔닙ퟝ웤쯻짨쪩뗄믺뗧ힰ훃ꆣ SOLENOID CONTROLLED VALVE, A valve controlled 뗧듅믮쏅ꎬ to open or close by the solenoid. 폃뗧듅쿟좦살뿘훆뾪맘뗄믮쏅 138TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SOLID STATE SWITCH, An electronic circuit that 만첬뗧쏅ꎨ뺧쳥뗧쏅ꎩꎬ provides switching in a current path. 퓚뗧쇷쇷뺭춾훐쳡릩뾪맘뗄뗧슷ꆣ SOUND SUPPRESSION LINER, A component in the 쿻틴도ꎬ nose cowl and around the engine for absorbing engine 퓚랢뚯믺뗄훜캧벰잰헻쇷헖쓚ꎬ폃살컼쫕랢뚯믺퓫틴뗄noise. 늿볾ꆣ SPAR, A principal spanwise beam in the structure of a 솺ꎬ wing, stabilizer or control surface. 믺틭ꆢ낲뚨쏦믲닙ퟝ쏦뷡릹훐뗄퇘틭햹랽쿲뗄훷솺ꆣ SPEED INTERVENTION, Pilot control of the speed 쯙뛈룉풤ꎬ during VNAV operation. 퓚VNAVꎨ뒹횱떼몽ꎩ닙ퟷ웚볤ꎬ량탐풱뿘훆쯙뛈ꆣ SPEED SCHEDULE, The planned speeds for a specific 볆뮮쯙뛈ꎬ phase of flight. 캪튻쳘뚨량탐뷗뛎쯹뚨뗄룷룶쯙뛈ꆣ 139TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SPIN BRAKE, A device in the nosewheel well for 춣훆뚯웷ꎬ stopping the wheel rotation after retraction. 잰싖닕쓚폃퓚웰실볜쫕웰뫳늻죃잰싖퓙뚯뗄ힰ훃ꆣ SPINNER, An aerodynamic fairing attached to the fan of 탽헖ꎬ a turbofan engine. 만뚨퓚컐싖럧질랢뚯믺뗄럧질짏뗄웸뚯헻쇷헖ꆣ SPLICE (NO. 1), A connection of two airplane skin 운뷓ꎬ sections. 량믺쏉욤폫쏉욤횮볤뗄솬뷓ꆣ SPLICE (NO. 2), An electrical connection between two 뷂뷓ꎬ wires. 솽룹뗧쿟횮볤뗄뗧뷓춷ꆣ 140TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SPOILER, A hinged moveable panel on top of the wing. 죅쇷냥ꎬ 뷂솬퓚믺틭뇭쏦짏뗄뿉뚯틭냥ꆣ Flight spoiler- assists ailerons for airplane roll (wing up and wing down) control 량탐죅쇷냥튻릦폃폐뛾ꆣ튻ꆢ킭훺뢱틭살닙ퟝ량믺 and for aerodynamic braking in 뗄맶ꆣ뛾ꆢ폃틔퓚량탐훐믲뗘쏦뮬 flight or on the ground. 엜쪱ퟷ캪복쯙웷ꆣ Ground spoiler-for aerodynamic braking on the 뗘쏦죅쇷냥튻뷶퓚뗘쏦쪱ퟷ캪복쯙웷ꆣ ground only. SPRING LOADED, A condition in which one part of a 떯믉볓퓘뗄ꎬ device is held in a particular relationship with another 평떯믉쪹튻룶ힰ훃뗄솽룶늿럝놣돖쳘쫢맘쾵뗄튻훖ힴpart by means of a spring. This allows some movement, 첬ꆣ룃ힴ첬퓊탭튻뚨퓋뚯ꎬ떫볌뛸믘뢴풭캻ꆣ but returns the parts to their original position. SQUAT, Airplane on ground condition. ퟅ슽ꎬ 량믺퓚뗘쏦뗄ힴ첬ꆣ SQUAT SENSOR, SEE - AIR/GROUND SENSOR ퟅ슽뒫룐웷ꎬ 볻 Air/Ground Sensor SQUAT SWITCH, SEE - AIR/GROUND SENSOR ퟅ슽뗧쏅ꎬ 볻 AirꎯGround Sensorꎮ 141TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SQUAWK (MODE,CODE, FUNCTION), Activate 랢쯍탅뫅ꎨ랽쪽ꎬ듺싫ꎬ릦쓜ꎩꎬ specific modes/codes/functions on the aircraft 쪹폃량믺펦듰믺쪱뗄튻훖뎣폃뗄횸뚨랽쪽ꎯ듺싫ꎯ릦transponder, .,” Squawk Three/Alpha, Two one zero 쓜ꆣ five, Low". SQUIB, An electrically operated pyrotechnic device for 놬맜ꎬ breaking a disc in the fire extinguisher bottle to release 폃틔놬웆쏰믰욿짏뗄풲욬ꎬ틔쫍럅쏰믰볁뗄뗧뿘퇌믰ힰthe extinguishing fluid. Also used for escape slide 훃ꆣ튲폃폚펦벱뮬쳝럅돶ꆣ deployment. STABILIZER, SEE - HORIZONTAL AND VERTICAL 낲뚨쏦ꎬ STABILIZER 볻 Horizontal and Vertical Stabilizerꎮ STABILIZER TRIM, Movement of the horizontal tail to 낲뚨쏦엤욽ꎬ change the attitude of the airplane about the pitch axis. 캪룄뇤량믺죆뢩퇶훡뗄ퟋ첬뛸ퟶ뗄쮮욽낲뚨쏦뗄뗷헻ꆣ STAGE, A numbering system for the compressor and 벶ꎬ turbine of a jet engine. 폃폚쪶뇰엧웸랢뚯믺뗄톹웸믺뫍컐싖뗄룷룶뛎캻뗄튻 훖뇠뫅쾵춳ꆣ STALL, A flight condition during which lift is destroyed 쪧쯙ꎬ due to slow airplane speed or attitude. 량탐쯙뛈맽뗍믲ퟋ첬뛸틽웰짽솦쪧좥뗄량탐ힴ첬ꆣ STAND PIPE, A pipe raised up from the bottom of a 솢쪽맜ꎬ reservoir that allows fluid to enter from the top and flow 듓죝웷뗗늿솢웰뗄맜뗀ꆣ쓜쪹튺쳥듓짏쇷쇷죋ꎬ좻뫳췢out to the system. It prevents picking up debris off the 쇷믘떽쾵춳훐ꎬ늢럀횹듸웰죝웷뗗늿뗄쯩킼ꆣ튲뿉뿘훆죝bottom of the reservoir. It can also control fluid height in 웷쓚튺쏦뗄룟뛈ꆣ the reservoir. 142TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING STANDARD INSTRUMENT DEPARTURE (SID), A 뇪ힼ틇뇭샫뎡(SID)ꎬ published procedure for departing an airport IFR. 폃폚쪹폃틇뇭량탐맦퓲샫뎡릫늼뗄돌탲ꆣ STANDARD TERMINAL ARRIVAL ROUTE (STAR), A 뇪ힼ떽뎡몽쿟ꎨSTARꎩꎬ published procedure for approaching an airport IFR. 폃폚쪹폃틇뇭량탐맦퓲떽뎡뗄릫늼돌탲ꆣ STAR, SEE - STANDARD TERMINAL ARRIVAL 뇪ힼ떽뎡몽쿟ꎬ ROUTE 볻 Standard Terminal Arrival Routeꎮ START VALVE, A valve in the engine start system for 웰뚯믮쏅ꎬ supplying air from the pneumatic manifold to the engine 랢뚯믺웰뚯쾵춳훐ꎬ폃틔듓웸풴ퟜ맜쿲랢뚯믺웰뚯웷릩starter. 웸뗄믮쏅ꆣ STATIC AIR TEMPERATURE (SAT or OAT), Ambient 뺲컂ꎨSAT or OATꎩꎬ or outside air temperature. 뮷뺳뿕웸믲췢뷧뿕웸뗄컂뛈ꆣ STATIC PORT, A small hole in the fuselage for sensing 뺲톹뿚ꎬ static pressure for airplane instruments. 캻폚믺짭췢뇭ꎬ폃살캪량믺틇뇭룐펦뺲톹뗄킡뿗ꆣ STATIC PRESSURE, Pressure in the air or fluid at rest 뺲톹ꎬ measured in pounds per square inch. 뺲횹ힴ첬뗄뿕웸믲튺쳥뗄톹솦ꆣ폃냵/욽랽펢듧살뛈솿ꆣ 143TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING STATION, A vertical reference plane along the fuselage 햾캻ꎬ for measurements along the fuselage. 폃틔퇘믺짭랽쿲뛈솿뗄뒹횱믹ힼ욽쏦ꆣ STATOR, The stationary section of the compressor 뚨ퟓꎬ between the compressor stages in the jet engine. 엧웸랢뚯믺톹웸믺룷벶횮볤뗄늻뚯뗄늿럝ꆣ STEERING ACTUATOR, A hydraulic actuator on the 췤ퟷ뚯춲ꎬ landing gear shock strut for steering (moving) the 튻룶퓚웰실볜복헰횧훹짏ꎬ폃틔쪹잰싖ퟳ폒췤뗄튺톹nosewheel left or right. ퟷ뚯볲ꆣ STEERING TILLER, A hand-operated lever in the 잰싖췤쫖뇺ꎬ control cabin for steering (moving) the nosewheel left or 볝쪻닕쓚폃살쪹잰싖ퟳ폒췤뗄쫖뇺ꆣ right. STICK NUDGER, A device to push the control column ퟔ뚯췆룋웷ꎬ forward just before a stall occurs. 퓚쪧쯙잰쓜붫볝쪻룋쿲잰췆뗄ힰ훃ꆣ 144TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING STICK SHAKER, An electric motor operated device on 헱룋웷ꎬ the control column which shakes the column before the 볝쪻룋짏ꎬ퓚량믺쪧쯙잰쪹볝쪻룋헱뚯뗄평뗧십듯닙 stall occurs. ퟷ뗄ힰ훃ꆣ STOPWAY, An extension beyond the end of the runway 복쯙낲좫뗀ꎬ which may be used to decelerate the airplane in case of 엜뗀솽뛋ꎬ뿉폃ퟷ퓚훐뛏웰량쪱량믺복쯙뗄퇓짬뗘듸ꆣan aborted takeoff. It cannot be less than runway width 쯼뗄뿭뛈늻쓜햭폚엜뗀ꎬ펲뛈튲뇘탫쓜릻횧돖량믺틔쏢뷡and must be strong enough to support the airplane 릹쯰뮵ꆣ without structural damage. STRAIN, Structural material deformed slightly due to the 펦뇤ꎬ action and forces of stress. 틲펦솦ퟷ폃뫍쫜솦뛸쟡캢뇤탎뗄뷡릹닄쇏ꆣ 145TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING STRINGER, Structural components in the fuselage or 뎤ꎬ wing for transmitting skin loads to frames or wing ribs. 믺짭믲믺틭훐ꎬ폃틔붫쏉욤퓘뫉뒫훁떽룴뿲믲틭샟뗄뷡 릹볾ꆣ STROBE LIGHT, A high intensity flashing light on the 욵직뗆맢ꎬ wing tips and empennage. 캻폚틭짒뫍믺캲뗄룟잿뛈뗄직맢뗆ꆣ STRUCTURAL MEMBER, The part of an aircraft 릹볾ꎬ structure that has been designed and constructed to 량믺뷡릹뗄튻늿럝ꆣ캪퓋쯍뫍돐쫜뢺퓘벰펦솦뛸짨볆붨carry and accept loads and stress. 퓬돉ꆣ STRUT, Mechanical components of the landing gear for 횧훹ꎬ keeping the gear in the extended position. 웰실볜짏폃틔쪹웰실볜놣돖퓚짬돶캻훃뗄믺킵쪽늿볾ꆣ 146TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SUMMATION UNIT, An electronic component for 좼폍ퟜ뫍웷ꎬ adding fuel quantities in all tanks sending a signal to the 붫쯹폐좼폍쿤쓚뗄좼폍솿쿠볓ꎬ늢붫ퟜ폍솿폃탅뫅뒫훁total fuel quantity display. 폍솿쿔쪾웷뗄뗧ퟓ늿볾ꆣ SUMP, A lowest point in the engine oil system or fuel 벯폍닛ꎬ tank. 랢뚯믺뮬폍쾵춳쓚ꎬ믲좼폍쿤쓚뗄ퟮ뗍뗣ꆣ SUPPLEMENTAL DATA, Additional data stored in the 퓶늹쫽뻝ꎬ FMC memory, supplementing the loaded navigation 량탐맜샭볆쯣믺듦뒢웷훐뗄뢽볓쫽뻝ꆣ폃폚늹돤떼몽쫽data base. 뻝뿢ꆣ SUPPLEMENTARY MODES, Additional digital flight 뢨훺랽쪽ꎬ control system modes that are available, used when 뢽볓뗄쫽ퟖ량탐뿘훆쾵춳랽쪽ꎬ떱욫샫헽뎣랽쪽쪱쪹deviating from normal modes. 폃ꆣ SURGE, A sudden change in the airflow through the 뒭헱ꎬ compressor resulting in the compressor not being able 평폚춨맽랢뚯믺뗄톹웸믺뗄웸쇷뗄춻좻룄뇤ꎬ뛸떼훂to compress the airflow. 톹웸믺늻쓜톹쯵뿕웸뗄쿖쿳ꆣ SWAGE, To squeeze together two or more items to 쿝탍쒣ꎬ form a permanent unit. Example: a lead or steel piece 벷톹솽볾믲솽볾틔짏뗄컯쳥살훆퓬튻볾폀뻃탔뗄풪볾ꆣon a cable which forms a stop or camlike unit. Also to 샽죧ꎺ튻뿩잦믲룖퓚룖쯷짏탎돉튻룶횹뚯웷믲춹싖횮샠뗄reduce the diameter of tubing. 풪볾ꆣ튲뿉ퟷ복킡맜뗀뗄횱뺶횮폃ꆣ SWITCH, A device which changes the condition of an 뾪맘ꎻ electrical system from on/off or open/close. 룄뇤뗧웸쾵춳춨ꎯ뛏믲뾪ꎯ맘뗄ힰ훃ꆣ 147TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING SWIVEL, A device for rotation of components. ퟹꎬ 폃틔쪹늿볾탽뗄ힰ훃ꆣ SWIVEL COUPLING, A junction in hydraulic 뚯뷓춷ꎬ tubes for allowing component movement. 튺톹맜쿟짏ꎬ쪹쿠쇚뗄튺톹맜쓜릻뚯뗄뷓춷ꆣ SYMBOL, A graphic view of an aircraft component in a 럻뫅ꎬ very simplified format. Used on drawings to represent 량믺늿볾뗄볲떥쪾틢춼ꆣ폃폚믦춼틔듺뇭늿볾뗄헻룶뷡the entire component. 릹ꆣ SYMBOL GENERATOR, Generates the video signals 럻뫅랢짺웷ꎬ that are displayed on the EADI and the EHSI. 캪ퟋ첬횸틽틇뫍몽뗀싞엌닺짺춼쿳탅뫅뗄ힰ훃ꆣ SYNCHRONIZER, A device or circuit to make the units 춬늽웷ꎬ operate in unison. 쪹풪볾닙ퟷ킭뗷튻훂뗄ힰ훃믲뗧슷ꆣ SYNCHRONOUS, Refers to two or more things which 춬늽ꎬ happen in a system at the same time. 횸솽룶믲솽룶틔짏뗄뚫컷춬쪱퓚튻룶쾵춳훐랢짺ꆣ 148TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING T TAB, A small, hinged, moveable part on the trailing 뗷헻욬ꎬ edge of a control surface (aileron, elevator, rudder). 뷂뷓퓚닙ퟝ쏦ꎨ뢱틭ꆢ짽붵뛦ꆢ랽쿲뛦ꎩ뫳풵뗄뿉뚯킡 늿볾ꆣ Balance or control tab - moves in an opposite 욽뫢믲닙ퟝ뗷헻욬ꆪ폫닙ퟝ쏦퓋뚯랽쿲쿠랴ꎬ폃틔냯 direction to the control surface for assisting 훺닙ퟝ쏦퓋뚯ꆣ in movement of the control surface. Trim tab - provides controlled deflection of ailerons 엤욽뗷헻욬ꆪ쪹뢱틭믲랽쿲뛦ퟷ뿘훆횮쿂뗄욫ꎬ틔 or rudder to compensate for imbalance in 늹뎥췆솦ꎬ믲좼폍솿뗄늻욽뫢ꆣ thrust or fuel quantity. Stabilizer trim - controlled deflection of the horizontal 낲뚨쏦엤욽ꆪ쪹쮮욽낲뚨쏦ퟷ뿘훆횮쿂뗄욫ꎬ틔복 stabilizer to reduce control force. 짙닙ퟝ솦ꆣ TACHOMETER GENERATOR, A small electric 닢쯙랢뗧믺ꎬ generator for supplying current at a frequency 쳡릩욵싊폫쯙돉뇈샽뗄뗧쇷뗄킡랢뗧믺ꆣ proportional to the speed of rotation. TAI, SEE -THERMAL ANTI-ICING 죈럀뇹ꎬ 볻Thermal AntiꎭIcingꎮ TAIL PIPE, Duct at the back of the engine exhaust. 캲맜ꎬ 랢뚯믺업웸맜뫳늿ꎬ폃틔업돶랢뚯믺뗄럏웸뗄맜뗀ꆣ TAIL WIND, The wind component relative to the 쮳럧ꎬ airplane direction and coming from behind the airplane. 량믺뫳랽뗄살럧퓚량탐랽쿲짏뗄럖솿ꆣ 149TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING TAKEOFF ANALYSIS, Analysis that evaluates the 웰량럖컶ꎬ airplane takeoff performance capability for a variety of 뛔량믺퓚튻룶룸뚨뗄믺뎡뫍엜뗀ꎬ퓚룷훖뮷뺳ힴ뿶쿂뗄environmental factors at a given runway and airport. 웰량탔쓜쓜솦뗄움맀ꆣ TARGET PARAMETER, A specific goal such as 쒿뇪닎쫽ꎬ airspeed, thrust, engine speed, altitude, temperature, or 폻듯떽뗄쳘뚨쒿뇪ꎬ죧뿕쯙ꆢ췆솦ꆢ랢뚯믺쯙ꆢ룟뛈ꆢrate of climb which is to be achieved. 컂뛈믲엀짽싊뗈ꆣ TASK TICKET, A computer label used for tracking the 릤ퟷ볇슼떥ꎬ completion of a task. 폃폚ힷퟙ릤ퟷ췪돉쟩뿶뗄뗧쓔볇슼떥ꆣ TAT, SEE - TOTAL AIR TEMPERATURE 좫컂ꎬ 볻Total Air Temperatureꆤ TAXI, Movement of airplane on the ground using 뮬탐ꎬ airplane engine power. 량믺욾뷨랢뚯믺췆솦퓚뗘쏦뗄퓋뚯ꆣ TAXI FUEL, Fuel burned from the time the engines are 뮬탐좼폍ꎬ started until the airplane begins the takeoff maneuver. 듓랢뚯믺웰뚯ꎬ떽량믺뾪쪼ퟷ웰량뚯ퟷ횮볤ꎬ쯹쿻뫄뗄 좼폍ꆣ TCAS, SEE -TRAFFIC ALERT AND COLLISION 뿕훐붻춨뺯룦폫럀ힲ쾵춳ꎬ AVOIDANCE SYSTEM 볻 Traffic Alert and Collision Avoidance Systemꎮ 150TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING TCC, SEE - TURBINE CASE COOLING 컐싖믺쾻샤좴ꎬ 볻 Turbine Case Coolingꎮ TEE, A pipe or tube connector manufactured in the Tퟖ뷓춷ꎬ shape of a T 훆돉Tퟖ탎뗄맜뗀솬뷓웷ꆣ TEFLON, A synthetic material for hydraulic and 첩럺슡ꎬ pneumatic seals. 폃폚훆퓬튺톹뫍웸풴럢퇏뗄튻훖죋릤뫏돉닄쇏ꆣ TEMPERATURE INDICATION STRIP, Temperature 컂뛈횸쪾듸ꎬ sensitive tape which changes color at high temperature 폶룟컂뇤즫ꎬ틔횸쪾늿볾훜캧룟컂뗄죈쏴듸ꆣ for indicating component exposure to high temperatures. TEMPERATURE INVERSION, An atmospheric 쓦컂ꎬ condition which causes the outside temperature to 튻훖듳웸ힴ첬ꎬ틽웰췢뷧컂뛈쯦량믺룟뛈퓶볓뛸퓶볓ꆣ increase as the airplane altitude increases. TENSIOMETER, An instrument used to measure the 헅솦볆ꎻ tension applied to aircraft control cables. 폃폚닢솿량믺닙ퟝ룖쯷짏쫜떽뗄헅솦뗄튻훖틇뇭ꆣ 151TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING THERMAL ANTI-ICING, A method of preventing ice 죈럀뇹ꎬ formation on the nose cowl and wing leading edges by 폃죈뿕웸럀횹랢뚯믺잰헻쇷헖뫍믺틭잰풵뷡뇹뗄랽램ꆣ using hot air. THERMAL COMPENSATOR, A brush-like wire element 죈늹뎥웷ꎬ in a tube for preventing temperature increase when tube ힰ퓚맜ퟓ샯ꎬ쪹맜ퟓ쫜퇵웸돤톹쪱컂뛈늻훂폚짏짽뗄튻is pressurized with oxygen. 룶쮢ퟓ탎떼쿟풪볾ꆣ THERMAL RELIEF VALVE, A valve which opens to 죈뿘쫍톹믮쏅ꎬ decrease fluid pressure due to high fluid temperature. 틲캪쇷쳥컂뛈맽룟뛸듲뾪ꎬ틔복뗍쇷쳥톹솦뗄믮쏅ꆣ THERMAL SWITCH, SEE -THERMOSTATIC SWITCH 죈뗧쏅ꎬ 볻 Thermostatic Switchꎮ THERMISTOR, A temperature sensitive resistor whoes 죈쏴뗧ퟨꎬ resistance changes with a change in temperature. 튻훖뗧ퟨ횵쯦컂뛈뗄뇤뮯뛸뇤뮯뗄뛔컂뛈쏴룐뗄뗧ퟨꆣ 152TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING THERMOCOUPLE, Two different metal wires joined at 죈뗧얼ꎬ both ends for temperature measurement. When both 폃살솿좡컂뛈ꎬ솽뛋쿠솬뗄솽룹늻춬뷰쫴떼쿟ꆣ떱솽뛋junctions are at different temperatures, an electric 횮볤폐컂닮쪱ꎬ뷰쫴쮿쓚벴닺짺폫컂닮돉뇈샽뗄뗧쇷ꆣ current is produced proportional to the temperature difference. THERMOSTAT, A component set to operate at a 뫣컂웷ꎬ definite temperature for controlling electric circuits and 폃살퓚튻뚨컂뛈쿂닙ퟷꎬ틔뿘훆뗧슷뫍믮쏅뗄늿볾ꆣ valves. THERMOSTATIC SWITCH, A heat controlled, 뫣컂뗧쏅ꎬ temperature sensitive switch which opens at a preset 튻룶죈뿘뗄ꆢ퓚풤뚨컂뛈뛏뾪뗄죈쏴뗧쏅ꆣ temperature. THR HOLD, SEE -THROTTLE HOLD 폍쏅놣돖ꎬ 볻 Throttle Holdꎮ 153TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING THRESHOLD (NO. 1), The bottom part of an opening in 쏅볷ꎬ a fuselage doorway. 믺짭닕쏅뾪뿚뗄뗗늿ꆣ THRESHOLD (NO. 2), The approach end of the runway. 엜뗀춷ꎬ 믺뎡엜뗀떽뎡뗄튻뛋ꆣ THROTTLE HOLD, A mode of the autothrottle where 폍쏅놣돖ꎬ the thrust levers remain where placed. ퟔ뚯폍쏅뗄췆솦쫖뇺늻룄뇤캻훃뗄랽쪽ꆣ THROTTLE LEVER ANGLE, Angle of throttle lever 폍쏅룋뷇뛈ꎬ displacement. 폍쏅룋쫖뇺캻틆뗄뷇뛈ꆣ THROTTLE SPLIT, An engine control condition in which 폍쏅럖닦ꎬ the throttle lever angle is different between throttle 튻훖랢뚯믺뿘훆ힴ첬ꆣ퓚헢훖ힴ첬쿂ꎬ폍쏅룋횮볤뗄폍levers but the engine thrusts are the same. 쏅룋뷇뛈늻춬ꎬ떫랢뚯믺췆솦쿠춬ꆣ THROTTLE VALVE, A valve in the fuel control unit for 뷚쇷믮쏅ꎬ scheduling fuel flow to the engine. 좼폍뿘훆ퟩ볾훐ꎬ폃틔업뚨좼폍쇷솿뗄믮쏅ꆣ 154TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING THRUST, The driving force produced by a jet engine. 췆솦ꎬ 엧웸랢뚯믺뗄쟽뚯솦ꆣ THRUST LIMIT, Maximum allowable thrust for a specific 췆솦벫쿞ꎬ set of conditions. 퓚튻ퟩ쳘뚨뗄ힴ뿶쿂ꎬ랢뚯믺뗄ퟮ듳퓊탭췆솦ꆣ THRUST MODE ANNUNCIATOR, A display unit or part 췆솦랽쪽탅뫅없ꎬ of a display that shows the engine thrust mode. 쿔쪾랢뚯믺췆솦랽쪽뗄쿔쪾웷믲쿔쪾웷뗄튻늿럝ꆣ THRUST REVERSER, A mechanical device located in 랴췆ힰ훃ꎬ the fan or exhaust section of the engine for eliminating 캻폚랢뚯믺뗄럧질뛎믲업웸뛎뗄믺킵ힰ훃ꆣ룃ힰ훃춨맽forward thrust by deflecting fan air or exhaust gasses in 쪹럧질뿕웸믲업돶횮럏웸돥쿲잰랽ꎬ틔쿻돽랢뚯믺쿲잰뗄the forward direction can be used for stopping during 췆솦ꎬ늢복뛌량믺퓚ퟅ슽믲훐뛏웰량쪱뗄훆뚯뻠샫ꆣ landing and during an RTO. 155TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING THRUST REVERSER COWL, A cover around the thrust 랴췆헻쇷헖ꎬ reverser of the engine that can be opened to access 퓚랢뚯믺랴췆ힰ훃췢캧뗄헖ퟓꆣ좡쿂뫳뿉틔릻떽쓚늿뗄components for maintenance. 늿볾틔뷸탐캬뮤ꆣ TIME DELAY, An electrical circuit for starting/stopping 퇓쪱뗧슷ꎬ the flow of electric current to an operating component 폃틔웰뚯ꎯퟨ횹뗧쇷퓚쒳튻뛎쪱볤쓚뫳뷸죋릤ퟷ늿볾for a period of time/after a period of time. 뗄뗧슷ꆣ TIRE SPEED LIMIT WEIGHT, The maximum weight 싖첥쯙뛈쿞훘ꎬ permitted at takeoff that results in a liftoff speed equal to 량믺웰량쪱ꎬ쪹샫뗘쯙뛈뫍뛮뚨뗄싖첥쯙뛈쿠춬뗄퓊탭the rated tire speed. ퟮ듳훘솿ꆣ TOLERANCE, The part of a specific measurement that 릫닮ꎬ is allowed to vary in dimension. Usually given in a plus 쳘뚨솿뛈죝탭폐욫닮뗄늿럝ꆣ춨뎣틔ꎨꎫꎩ믲ꎨꎭꎩ (+) or minus (-) format. 뗄탎쪽뇭쪾ꆣ TOP OF CLIMB, The point at which the airplane 엀짽뚥뗣ꎬ reaches the cruise altitude. 량믺듯떽톲몽룟뛈뾪쪼욽량뗄쓇튻뗣ꆣ TOP OF DESCENT (TOP), The point at which the 쿂붵웰쪼뗣ꎨTOPꎩꎬ airplane departs the cruise altitude and begins to 량믺량샫톲몽룟뛈뛸뾪쪼쿂붵뗄쓇튻뗣ꆣ descend. TORQUE TUBE, A tubular component for transmitting 얤솦맜ꎬ twisting motion to the control surfaces. 폃틔붫얤퓋뚯뒫룸닙ퟝ쏦뗄맜ힴ늿볾ꆣ 156TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING TORSION, Twisting of a material or part caused by 얤쟺ꎬ external stress. 컯쳥쫜췢펦솦뗄ퟷ폃쯹닺짺뗄얤ꆣ TORSION LINK, A hinged linkage connecting the inner 얤솦뇛ꎬ and outer cylinders of a shock strut. 복헰횧훹뗄쓚춲폫췢춲횮볤ꎬ폃틔럀횹믮죻탽뗄뷂솴 솬룋ꆣ TOTAL AIR TEMPERATURE, Ambient or static air 뿕웸좫컂ꎬ temperature plus the rise of temperature due to the ram 뮷뺳컂뛈믲뺲뿕웸뗄컂뛈ꎬ뫍평폚룟쯙량탐뗄돥믷킧펦effect of high speed flight. 뛸틽웰뗄컂뛈뗄짽룟뗄ퟜ뫍ꆣ TOTAL PRESSURE, Pressure higher than ambient ퟜ톹ꎬ pressure due to air flow, measured in pounds per 평폚뿕웸쇷뚯뛸룟폚뮷뺳톹솦뗄톹솦ꆣ뎣폃냵ꎯ욽랽펢square inch (psi). 듧ꎨpsiꎩ살뛈솿ꆣ TOTAL TEMPERATURE, Temperature higher than 좫컂ꎬ ambient temperature due to the compression of air flow, 평폚웸쇷뗄톹쯵뛸룟폚뮷뺳컂뛈뗄뿕웸컂뛈ꆣ폃짣쫏measured in degrees Celsius (C), or degrees ꎨ°Cꎩ믲뮪쫏ꎨ°Fꎩ살솿뛈ꆣ Fahrenheit (F). TOUCHDOWN, The point at which an aircraft first 뷓뗘ꎬ makes contact with the runway. 량믺붵실쪱ꎬ량믺ퟮ쿈뷓뒥엜뗀뗄튻뿌ꆣ 157TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING TOUCHDOWN ZONE ELEVATION (TDZE), The 뷓뗘쟸뇪룟ꎨTDZEꎩꎬ highest elevation in the first 3,000 feet of the landing 엜뗀춷뛋3,000펢돟뗄ퟮ룟뇪룟ꆣ surface. TOWING LUG, Part of nose or main landing gear for 잣틽뮷ꎬ attaching a tow bar to move the airplane on the ground. 잰웰실볜믲훷웰실볜짏ꎬ폃틔뷓짏잣틽룋틔뇣퓚뗘쏦짏 틆뚯량믺뗄늿럝ꆣ TRACK (NO. 1), A structural member for attaching fixed 맬쳵ꎬ components to, or guiding movable components along. 폃틔뷓솬만뚨늿볾ꎬ믲틽떼뿉뚯늿볾뗄릹볾ꆣ TRACK (NO. 2), A navigation term that describes the 몽벣ꎬ projection on the earth's surface of the path of an 떼몽쫵폯ꆣ탎죝량믺몽벣퓚뗘쏦뗄춶펰ꆣ airplane. TRAFFIC ALERT AND COLLISION AVOIDANCE 뿕훐붻춨뺯룦폫럀ힲ쾵춳ꎬ SYSTEM, A system designed to alert the flight crew to 폃살뺯룦믺ퟩ죋풱뿉쓜폫웤쯻ힰ폐펦듰믺쟒퓚춬튻쟸potential conflicts with other transponder equipped 폲량탐뗄량믺폐돥춻뗄뺯놨쾵춳ꆣ airplanes flying in the same area. TRAILING EDGE, The rear edge of a wing, stabilizer or 뫳풵ꎬ control surface. 믺틭ꆢ낲뚨쏦ꆢ믲닙ퟝ쏦뗄뫳뇟풵ꆣ TRANSDUCER, An electrical device that either takes 뮻쓜웷ꎬ electrical energy and changes it into mechanical 쓜붫뗧쓜뮻캪믺킵퓋뚯ꎬ믲붫믺킵퓋뚯뮻캪뗧쓜뗄movement, or mechanical movement and changes it 뗧웸늿볾ꆣ into electrical energy. TRANSFER GEARBOX, SEE - ANGLE GEARBOX 뮻돝싖쿤ꎬ 볻Angle Gearboxꎮ 158TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING TRANSFER MECHANISM, A component for 뮻믺릹ꎬ transferring motion from one place to another. 붫퓋뚯평튻뒦훁쇭튻뒦뗄늿볾ꆣ TRANSFORMER, An electrical device which uses 뇤톹웷ꎬ electromagnetic induction to transfer electrical energy 튻훖샻폃뗧듅룐펦ꎬ붫뗧쓜듓튻룶뗧슷뮻떽쇭튻룶뗧from one circuit to another circuit. 슷뗄뗧웷ힰ훃ꆣ TRANSFORMER RECTIFIER UNIT, An electronic 뇤톹헻쇷웷ꎬ device for changing alternating current to direct current 폃살붫붻쇷뗧뇤캪횱쇷뗧릩룸량믺뗧웸쾵춳뗄뗧ퟓힰto supply airplane electrical systems. 훃ꆣ TRANSIENT, A momentary surge on a signal or power 쮲뇤ꎬ line. It may produce false signals or triggering pulses 탅뫅믲쫤뗧쿟짏뗄쮲볤뗧펿ꆣ헢훖뗧펿뎣믡닺짺튻킩듭and cause component breakdowns or failures. 컳탅뫅믲뒥랢싶돥ꎬ퓬돉늿볾맊헏믲쯰뮵ꆣ TRANSISTOR, A solid state electronic component for 뺧쳥맜ꎬ use in electrical circuits. It consists of a base, collector 뗧슷쓚쪹폃뗄만첬뗧ퟓ늿볾ꆣ춨뎣뻟폐죽벫ꎺ믹벫ꆢ벯and emitter. Two types of transistors are PNP and NPN. 뗧벫ꆢ뫍랢짤벫ꆣ폐틔쿂솽훖ꎺ PNPꎨ헽뢺헽ꎩ믹벫뗧캻뗍폚랢짤벫ꆣ NPNꎨ뢺헽뢺ꎩ믹벫뗧캻룟폚벯뗧벫ꆣ 159TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING TRANSITION, To change from one phase of flight to 맽뛉ꎬ another. 듓튻룶량탐뷗뛎돉쇭튻룶량탐뷗뛎ꆣ TRANSITION ALTITUDE, The altitude at which the 맽뛉룟뛈ꎬ altimeter setting is changed. 룄뇤룟뛈뇭짨뚨쪱뗄량믺룟뛈ꆣ TRANSLATING COWL, The movable outer portion of 욽틆헻쇷헖ꎬ the thrust reverser cowl which is operated during 랴췆맽돌훐쪹폃뗄랴췆헻쇷헖췢쏦뗄뿉뚯늿럝ꆣ reverse thrust. TRANSMITTER, An electrical component for sending 랢짤믺ꎬ information from one location to another. 붫탅쾢듓튻뒦랢훁쇭튻뒦뗄뗧웸늿볾ꆣ TRANSPONDER, A radio transmitter-receiver which 펦듰믺ꎬ transmits identifiable signals automatically when the 퓚쫕떽뫏쫊톯컊뫳ꎬ쓜ퟔ뚯랢짤뿉쪶뇰탅뫅뗄컞쿟뗧쫕proper interrogation is received. 랢믺ꆣ TRIM, The adjustment of engine and airplane controls 엤욽ꎬ for a balanced condition of operation. 캪쪹랢뚯믺뫍량믺퓚욽뫢뗄ힴ뿶쿂릤ퟷ뛸ퟶ뗄랢뚯믺뫍량믺닙ퟝ쾵춳뗄뗷헻ꆣ 160TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING TRIM TAB, A small hinged movable part on the trailing 엤욽뗷헻욬ꎬ edge of a control surface (aileron, rudder) (see TAB). 뷂솬퓚뢱틭뫍랽쿲뛦뗈닙ퟝ쏦뫳풵뗄뿉뚯늿럝ꆣ TRIP FUEL, The total fuel consumed from brake release 몽냠좼폍ꎬ through climb, cruise, and descent, to landing at 튻룶몽냠평쯉즲뎵뾪쪼ꎬ뺭맽엀짽ꆢ톲몽뫍쿂붵ꎬ떽 destination. 퓚쒿뗄뗘ퟅ슽캪횹ꎬ쯹뫄뗄좫늿좼폍ꆣ TRU, SEE -TRANSFORMER RECTIFIER UNIT 뇤톹헻쇷ힰ훃ꎬ 볻 Transformer Rectifier Unitꎮ TRUE AIRSPEED(TAS), The actual speed of the 헦뿕쯙ꎨTASꎩꎻ aircraft in relation to the moving air. The true airspeed is 량믺쿠뛔폚쇷뚯훐뗄듳웸뗄쪵볊쯙뛈ꆣ평횸쪾뿕쯙뺭맽equal to the indicated airspeed corrected for position 캻훃ꆢ톹솦뫍컂뛈킣헽뛸뗃ꆣ error, compressibility, and temperature effects. TRUTH TABLE, in digital logic, a table which describes 헦횵뇭ꎬ a logic function by listing all possible combinations of 쫽톧싟벭훐폃살뇭듯싟벭몯쫽뗄뇭ꆣ룃뇭쇐돶쇋쯹폐뿉input values and shows the output value for each input 쓜뗄쫤죋ퟩ뫏ꎬ뫍쎿룶쫤죋ퟩ뫏쯹닺짺뗄쫤돶횵ꆣ combination. 161TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING TURBINE, A rotating part of an engine which extracts 컐싖ꎬ kinetic energy from the combustion chamber gases. 랢뚯믺쓚ꎬ듓좼징맽뗄룟컂룟톹웸쳥훐?좡뚯쓜뗄뚯This energy is converted to turbine rotation which 늿럝ꆣ룃뚯쓜쪹컐싖뚯ꎬ컐싖퓲뺭평춬탄훡듸뚯톹웸믺rotates the compressors and fan through a coaxial 뫍럧질ꆣ shaft. TURBINE CASE COOLING, A method of cooling the 컐싖믺쾻샤좴ꎬ engine by using fan air. This cooling process is used to 폃럧질뿕웸샤좴랢뚯믺뗄튻훖랽램ꆣ룃샤좴맽돌놻폃폚increase engine efficiency. 쳡룟랢뚯믺킧싊ꆣ TURBOFAN, 컐싖럧질ꎬ (1). A jet engine in which the first set of blades is a ꎨ1ꎩꎮ뗚튻ퟩ튶욬릹돉튻룶듳럧질뗄엧웸랢뚯믺ꆣ large fan. (2). An air driven fan/compressor used in air ꎨ2ꎩꎮ뿕뗷쾵춳쓚뗄평뿕웸쟽뚯뗄컐싖뫍톹웸믺ퟩ뫏ꆣ conditioning system. TURBULENCE, The movement or shaking of an 뗟ꎬ airplane caused by unstable air masses. 평늻컈뚨뗄뿕웸췅퓬돉뗄량믺퓋뚯믲뚶뚯ꆣ 162TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING TURBULENT AIR PENETRATION SPEED, A speed 뗟뒩맽쯙뛈ꎬ that provides adequate maneuver margins when flying 량믺량뷸늻컈뚨뗄뿕웸췅쪱ꎬ쳡릩쫊떱닙ퟝ풣뛈뗄쯙into unstable air masses. 뛈ꆣ TURNBUCKLE, A mechanical device with left and right 쯉뷴식쳗ꎬ hand threads for tension adjustment in the control 뻟폐ퟳ탽식컆뫍폒탽식컆ꎬ폃틔뗷헻닙ퟝ룖쯷헅솦뗄cables. 믺킵ힰ훃ꆣ U UHF, SEE - ULTRA HIGH FREQUENCY 뎬룟욵ꎬ 볻 Ultra High Frequency ULTRA HIGH FREQUENCY, The frequency band 뎬룟욵ꎬ between 300 and 3000 MHz. 욵싊듸퓚300 MHZ훁 3000 MHZ횮볤ꆣ UNDERCARRIAGE, SEE - LANDING GEAR 웰실볜ꎬ 볻 Landing Gear UNIT, One of the type, a single component. 떥풪ꎬ 쒳튻샠탍믲쒳튻늿볾ꆣ UPLOCK, A mechanism on the landing gear for keeping 짏캻쯸ꎬ the landing gear in the retracted position in the wheel 웰실볜짏ꎬ폃틔붫웰실볜놣돖퓚싖닕쓚쫕짏캻훃뗄믺well. 릹ꆣ 163TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING UPSET HEAD, The head produced on the tail of a rivet 쎭뚤춷ꎬ during the installation driving process. (See 퓚쎭뚤쎭뷓맽돌훐ꎬ쎭뚤캲늿튻뛋탎돉뗄춹춷ꎨ볻Manufactured Head.) Manufactured Headꎩꆣ V V1 (TAKEOFF DECISION SPEED), Is the maximum V1ꎨ웰량뻶뛏쯙뛈ꎩꎬ speed at which the rejected takeoff maneuver can be 룹뻝솪냮쫊몽쳵샽뗄맦퓲뫍돌탲ꎬ량믺쓜뷸탐훐뛏웰량initiated and the airplane stopped within the remaining 쟒퓚쪣폠뎡뎤쓚춣횹뗄ퟮ듳쯙뛈ꆣ쯼쫇퓚웰량뮬엜쪱죔뿉field length under the conditions and procedures defined 춣힡량믺뗄ퟮ뫳뻶닟뗣ꆣ in the FAR's. It is the latest point in the takeoff roll where a stop can be initiated. V2 (TAKEOFF SAFETY SPEED), The speed flown after V2ꎨ웰량낲좫쯙뛈ꎩꎬ takeoff during engine-out climbout maneuvers to assure 퓚튻랢늻릤ퟷ웰량뫳뗄엀짽훐캪놣횤ퟣ릻뗄쳝뛈쓜솦adequate gradient capability and maneuver margin. 뫍닙ퟝ풣뛈쯹량뗄쯙뛈ꆣ VACUUM, A negative pressure or pressure below 헦뿕ꎬ atmospheric, measured in inches or millimeters of 뢺톹믲뇈듳웸톹솦뗍뗄톹솦ꆣ뎣폃죴룉듧ꎨ믲죴룉뫁쏗ꎩmercury. 릯훹ꆣ VAPORIZE, The mechanical process in which a liquid is 헴랢ꎬ changed into a vapor. 튺쳥웻뮯뗄컯샭뇤뮯맽돌ꆣ VECTOR, A heading issued to an aircraft to provide 틽떼ꎬ navigational guidance by radar. 평샗듯쳡릩뗄몽쿲ꎬ틔룸폨량믺떼몽틽떼ꆣ VENT, A small hole orifice or restrictor in a component 춨웸ힰ훃ꎬ for allowing pressure in the component to be the same 늿볾쓚ꎬ폃틔쪹늿볾쓚뗄톹솦폫훜캧뮷뺳톹솦쿠춬뗄킡as ambient pressure. 뿗ꆢ믲쿞쇷웷ꆣ 164TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING VENT SCOOP, An air inlet/outlet on the bottom skin of 춨웸뷸웸뿚ꎬ the wing for fuel tank venting and supplying positive air 캻폚믺틭쿂뇭쏦쏉욤짏ꎬ폃틔좼폍쿤춨웸뫍쳡릩좼폍쿤pressure inside the fuel tank. 쓚헽웸톹뗄뿕웸뷸돶뿚ꆣ VENTURI, A part of pneumatic duct with reduced flow 컄쫏맜ꎬ area for airflow measurement. (Principle: As air velocity 웸풴떼맜짏ꎬ떼맜뷘쏦뇤킡틔솿좡뿕웸쇷솿뗄쓇튻늿increases, pressure decreases). 럝ꆣꎨ풭샭ꎬ떼맜뷘쏦뇤킡쪱ꎬ쇷쯙퓶룟ꎬ톹솦붵뗍ꆣꎩ VERTICAL AXIS, A vertical axis passing through the 뒹횱훡ꎬ airplane from top to bottom. Airplane left and right 평량믺짏늿훁뗗늿뗄뒹횱훡ꆣ폃틔닙ퟝ랽쿲뛦ꎬ쪹량 movement controlled by the rudder. 믺퇘듋훡ퟷퟳ폒퓋뚯ꆣ VERTICAL NAVIGATION, Functions which provide 뒹횱떼몽ꎬ guidance signals to control the aircraft during climb or 퓚엀짽믲쿂붵웚볤쳡릩틽떼탅뫅틔뿘훆량믺뗄릦쓜ꆣ descent. VERTICAL SPEED, The rate of change of altitude. 뒹횱쯙뛈ꎬ 량탐룟뛈룄뇤뗄쯙싊ꆣ 165TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING VERTICAL STABILIZER, A vertical surface of the 뒹횱낲뚨쏦ꎬ empennage for stability/control about the vertical axis. 퓚량믺캲늿ꎬ폃틔놣돖량믺죆뒹횱훡뗄컈뚨탔뫍뿘훆 뗄뒹횱쏦ꆣ VERTICAL TRACK, A climb or descent profile. 뒹횱몽벣ꎨVTKꎩꎬ 엀짽믲쿂붵웊쏦ꆣ VERY HIGH FREQUENCY, The frequency band 짵룟욵ꎬ between 30 and 300 MHz. 욵싊듸퓚30 MHZ훁 300 MHZ횮볤ꆣ VHF, SEE - VERY HIGH FREQUENCY 짵룟욵ꎬ 볻Very High Frequency VHF OMNI-DIRECTIONAL RANGE, A navigational 짵룟욵좫쿲탅뇪ꎬ system which tells the airplane's bearing from a VOR 튻훖떼몽쾵춳ꆣ룃쾵춳뿉쳡릩량믺떽VOR뗘쏦첨뗄랽 ground station and its deviation from a selected course 캻틔벰량믺뗄쿲ꎯ놳첨량탐뗄몽뗀욫샫ꆣ to/from the station. VISCOSITY, In a liquid - it is the resistance to flow. 햳탔ꎬ 튺쳥훐ퟨ낭튺쳥쇷뚯뗄ퟨ솦ꆣ VMO, The maximum design airspeed at which the ퟮ듳쪹폃뿕쯙ꎬ airplane may be operated. 량믺뿉쪹폃뗄ퟮ듳짨볆쯙뛈ꆣ 166TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING VNAV, SEE - VERTICAL NAVIGATION 뒹횱떼몽ꎬ 볻Vertical Navigationꎮ VOLATILE, The ability to vaporize readily. 틗믓랢뗄ꎬ 쯦쪱뿉틔헴랢뗄쓜솦ꆣ VOLATILE MEMORY, In computers, a memory whose 틗쪧듦뒢웷ꎬ contents are lost when power is removed. 퓚볆쯣믺훐ꎬ쪧좥뗧풴쪱듦뒢쓚죝뇣뚪쪧뗄듦뒢ힰ훃ꆣ VOLT, The unit of measurement of electromotive force. 럼쳘ꎬ 뗧톹뗄튻훖볆솿떥캻ꆣ VOR, SEE - VHF OMNI-DIRECTIONAL RANGE 짵룟욵좫쿲탅뇪ꎬ 볻 VHF OmniꎭDirectional Rangeꎮ VORTAC, A combined VOR and TACAN station. VORTACꎬ 볦뻟VORꎨ짵룟욵좫쿲탅뇪ꎩ뫍TACANꎨ햽쫵뿕훐떼 몽쾵춳ꎬ믲돆ꆰ엠뾵ꆱꎩ솽훖떼몽짨놸뗄떼몽첨ꆣ VORTEX CONTROL DEVICE, A small airfoil on the 컐쇷뿘훆웷ꎬ nacelle for improving airflow between nacelle and wing 랢뚯믺뛌닕짏ꎬ폃틔룄짆뛌닕뫍믺틭잰풵횮볤뗄웸쇷뗄leading edge. 킡틭욬ꆣ 167TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING VORTEX GENERATOR, Small metal airfoils, located on 컐쇷닺짺웷ꎬ wings and fuselage for delaying separation of the air ힰ퓚믺틭뫍믺짭뇭쏦ꎬ틔퓚웸쇷훐닺짺뻖늿컉쇷ꎨ컐flowing over the surface by creating local turbulence 쇷ꎩꎬ살췆동웸쇷ퟔ뇭쏦럖샫뗄킡뷰쫴욬ꆣ (vortex). VR (ROTATION SPEED), The speed at which aircraft VRꎨ첧싖쯙뛈ꎩꎬ rotation begins in order to achieve a speed of V2 at 35 퓚룃쯙뛈쿂량믺첧싖뾪쪼틔뇣퓚엜뗀짏뿕35펢돟쪱듯feet above the runway. 떽V2쯙뛈ꆣ VREF The reference speed at the 50 foot height in a VREFꎬ normal landing. This speed is generally equal to 량믺헽뎣ퟅ슽쪱ꎬ룟뛈50펢돟쪱뗄믹ힼ쯙뛈ꆣ춨뎣쫇량times the stall speed in the landing configuration. 믺퓚ퟅ슽탎첬쪱뗄쪧쯙쯙뛈뗄1ꎮ3놶ꆣ VTK, SEE - VERTICAL TRACK 뒹횱몽벣ꎬ 볻 Vertical Trackꎮ 168TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING W WALKING BEAM, A mechanical component attached to 뚯솺ꎬ the main landing gear and a hinged support which helps 훷웰실볜짏ꎬ튻뛋솬퓚복헰횧훹짏ꎬ쇭튻뛋솬퓚뷂뷓횧the actuator during retraction of the main gear. 독짏ꎬ폃틔킭훺ퟷ뚯춲쫕훷웰실볜뗄믺킵늿볾ꆣ WATER LINE, A horizontal reference plane along the 쮮쿟ꎬ fuselage for vertical measurements of the airplane. 퇘ퟅ믺짭햹쿲ꎬ폃틔솿좡뒹횱랽쿲뗄뻠샫ꎨ믲뎤뛈ꎩ뗄 쮮욽믹ힼ쏦ꆣ WATER SEPARATOR, A component in the air 돽쮮웷ꎬ conditioning system for removing water from the air 뿕뗷쾵춳쓚ꎬ폃틔퓚뿕웸톭뮷믺뗄뿕웸쿂폎돽좥뿕웸훐downstream of the air cycle machine. 뗄쮮럝뗄늿볾ꆣ 169TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING WATT, The basic unit of electrical power. 췟쳘ꎨ췟ꎩꎬ 뗧릦싊뗄튻룶믹놾떥캻ꆣ WAYPOINT, A predetermined geographical position 몽슷뗣ꎬ used to define a route. The waypoint is usually defined 폃폚뻶뚨몽쿟뗄풤뚨뗘샭캻훃ꆣ춨뎣폃뺭ꆢ캳뛈살뇭쪾ꆣ in terms of latitude and longitude. WEB, The portion of a beam or channel that has been 뢹냥ꎬ installed between the top and bottom flanges. Its prime 솺뗄뫡뷘쏦ꆣ뎣볻폚짏뫡솺폫쿂뫡솺솬뷓돉릤ퟖ탎ꆣ훷purpose is to furnish strength. 튪ퟷ폃쫇쫜솦ꆣ WHEEL SPIN UP, Rotational acceleration of the landing 믺싖볓쯙ꎬ gear wheels at landing touchdown. 량믺ퟅ슽뷓뗘쪱ꎬ웰실볜싖ퟓ뗄탽볓쯙뛈ꆣ WHEEL WELL, A part of the airplane for storage of the 싖닕ꎬ landing gear (undercarriage) after retraction. 량믺뗄튻늿럝ꎬ폃틔퓚웰실볜쫕웰횮뫳ꎬ쫕님웰실볜뗄쓇튻늿럝ꆣ 170TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING WIND COMPONENT, The effective wind relative to the 럧쿲솿ꎬ horizontal axes of the airplane. 쿠뛔폚량믺쮮욽훡뗄폐킧럧ꆣ WINDSHEAR, A change in wind speed and/or direction 럧쟐뇤ꎬ in a short distance resulting in a tearing or shearing 뛌뻠샫쓚럧솦믲럧쿲뗄룄뇤뛸탎돉뗄쮺삭솦뫍보쟐솦ꆣeffect. It can exist in a horizontal or vertical direction and 뿉랢짺퓚쮮욽랽쿲믲뒹횱랽쿲ꎬ폐쪱믡퓚솽룶랽쿲짏춬쪱occasionally in both. 돶쿖ꆣ WING CHORD PLANE, A reference plane from the tip 틭쿒욽쏦ꎬ of the leading edge to the tip of the trailing edge of the 춨맽믺틭잰풵뚥뛋뫍뫳풵뚥뛋뗄닎뾼욽쏦ꆣ wing. WING GEAR, The landing gear attached to the wing 틭쿂웰실볜ꎬ structure. 뷓솬떽믺틭뷡릹짏뗄웰실볜ꆣ WING ROOT, Part of the wing which is attached to the 틭룹ꎬ fuselage. 믺틭짏ꎬ폫믺짭쿠뷓뗄늿럝ꆣ WORD, In a digital computer, a word is a group of bits ퟖꎬ with a specified length. The typical digital word is eight 퓚쫽ퟖ볆쯣믺훐ꎬ튻룶ퟖ쫇평튻뚨뎤뛈뗄튻ퟩퟖ뷚쯹ퟩbits long. 돉ꆣ튻룶뗤탍뗄쫽ퟖퟖꎬ폐8룶ퟖ뷚ꆣ 171TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING WRAP AROUND, A BITE test comparing the 믘닢ꎬ computer's output signal with an internally stored value. ퟔ볬쾵춳뛔볆쯣믺뗄쫤돶탅뫅뫍쓚늿뗄듦뒢횵뷸탐뇈 뷏닢쫔ꆣ X XTK, SEE - CROSS TRACK 붻닦몽벣ꎬ 볻 Cross Trackꎮ Y YAW AXIS, A vertical axis passing through the airplane 욫몽훡ꎬ from top to bottom. Airplane left and right movement 폖돆뒹횱훡ꆣ평량믺짏늿춨쿲뗗늿뗄뒹횱훡ꆣ량믺죆듋controlled by the rudder. (See Vertical Axis). 훡퓋뚯벴퓬돉믺춷뗄ퟳ폒퓋뚯ꎬ헢훖퓋뚯쫇평랽쿲뛦살닙 ퟝ뗄ꆣ YAW DAMPER, A system that is used to move the 욫몽ퟨ쓡웷ꎬ rudder a small amount to oppose airplane yaw. 폃살짙솿틆뚯랽쿲뛦ꎬ틔뗖쿻량믺욫몽뗄쾵춳ꆣ YAW RATE, The rate at which the airplane moves 욫몽싊ꎬ around the vertical axis (left, right). 량믺죆욫몽훡퓋뚯뗄쯙싊ꆣ 172TECHNICAL DICTIONARY
펢몺뛔헕쏱폃몽뿕듊뗤 BOEING Z ZENER DIODE, A special type of diode which, when 웫쓉뛾벫맜ꎬ reverse biased, has a constant voltage drop. This 폖돆컈톹뛾벫맜ꎬ쫇튻훖뗧ퟓힰ훃ꆣ헽뎣뗧쇷뿉춨탐컞property makes zener diodes useful as voltage ퟨꎬ떫랴쿲뗧쇷퓲뇘탫퓚뗧톹듯떽풤뚨횵횮뫳닅쓜춨맽ꆣregulators. 퓚량믺뗧웷쾵춳쓚ퟶ캪뗷톹웷횮폃ꆣ랴쿲욫톹쪱ꎬ쯼폐튻 룶뫣뚨뗄뗧톹쿂붵ꆣ ZERK FITTING, A device through which oil or grease is ZERK뷓춷ꎬ supplied for lubrication of moving parts. ZERK릫쮾돶욷ꎬ폃틔뷓쫕뮬폍믲죳뮬횬ꎬ틔죳뮬믮 뚯늿볾뗄ힰ훃ꆣ ZFW, SEE - ZERO FUEL WEIGHT 컞좼폍훘솿ꎬ 볻 Zero Fuel Weightꎮ ZERO FUEL WEIGHT, The maximum allowable weight 컞좼폍훘솿ꎬ excluding usable fuel. 뿛돽뿉폃좼폍훘솿횮뫳뗄ퟮ듳퓊탭훘솿ꆣ 173TECHNICAL DICTIONARY
