1、Abbreviations and AcronymsA 1st firstA or a amberA/B autobrakeA/C aircraftA/C air conditioningA/D analog-to-digitalA/G air/groundA/P autopilotA/S antiskidA/S airspeedA/T autothrottleAACU antiskid/autobrake control unitAAU audio accessory unitabs absoluteabv aboveAC alternating currentac alternating
2、currentACARS aircraft communication addressing and reportingACAU air conditioning accessory unitacc accumulatorACC active clearance controlaccel accelerationaccum accumulatoraccy accessoryACM air cycle machineACMP Alternating current motor pumpACMS aircraft condition monitoring systemACP audio contr
3、ol panelACQ acquireacq acquisitionACRU Avionics cooling refrigeration unitACS air conditioning systemact activeactr actuatorACU airshow control unitADC air data computerADF automatic direction finderADI attitude director indicationADIRS air data inertial reference systemadj adjustable or adjustmentA
4、DL airborne data loaderADP air driven pumpADR air data referenceADS air data systemADV advanceadv advisoryAEP audio entertainment playerAFCS automatic flight control systemAFDS automatic flight director systemAFOLTS automatic fire/overheat logic & test systemAGB angle gearbox(PW Engine)AGB accessory
5、 gearboxAGCU APU generator control unitAGL above ground levelAGS air/ground systemAI aluminumAI attitude indicatorail aileronALR alternate load reductionALRT alertalt alternatealtn alternateAM amplitude modulatedamb ambientAME amplitude modulation equivalentAMM airplane maintenance manualamp amplifi
6、erampl amplifierAMUX audio multiplexerANN annunciatorannc announcementannun annunciatorANT antennaAOA angle of airflowAOA angle of attackAOC airline operations controlAOC approach-on-courseAOG airplane on groundAPB APU breakerAPB auxiliary power breakerapl airplaneAPP approachapp approachappl applic
7、ationapprox approximate or approximatelyAPS APU power switchAPU auxillary power unitARINC Aeronautical Radio Inc.ARINC aeronautical radio incorporatedarpt airportASA autoflight status annunciatorASG APU starter-generatorASM autothrottle servo motorASP Audio selector panelassy AssemblyASU attendant s
8、ervice unitasym asymmetryATA air transport associationATC air traffic controlATE automatic test equipmentatm attitudeATR austin trumbull radioATS air traffic servicesatt attendantattd attendantattend attendantauth authorityauto automaticaux auxillaryavail Availableavg averageAVM airborne vibration m
9、onitoringB B or b Blue(light only)bal balanceBAR bleed air regulatorbaro barometricBARO barometric altitudebat batteryBAT batteryBATT batteryBAV bleed air valveBB Broad bandBB Body buttock linebc broadcastBCD Binary coded decimalbcn beaconBFE buyer fumished equipmentBGM boarding musicBIT built in te
10、stBITE bulit-in test equipmentbkr breakerBL buttock linebld bleedblk blackblk blockBLS bezel light sensorBMS Boeing material specificationBMV brake metering valvebnr bumerBOV bias out of viewBPCU bus power control unitBPI braek pressure indicatorbrg bearingbrk brakebrt bright or brightnessBS body st
11、ationBSV burner staging valveBTB bus tie breakerbtl bottleBTM brake temperature monitorBTU british thermal unitBVCU bleed valve control unitC c centerC CelsiusC/B circuit breakerC/L coefficient of liftC/O change overC/W control wheelCA cation annunciatorCAA Civil Aviation Authoritycab cabinCAI cabin
12、 altitude indicatorcanc cancelcapt captainCAS computed airspeedcat categorycau or caut cautionCB circuit breakerCBP compressor bleed pressureCCA central control actuatorCCDL cross channel data linkCCN compatibility class numberccw counterclockwiseCDP conpressor discharge pressureCDS common display s
13、ystemCDS/DEU common display system/display electronics unitCDU center drive unitCDU control display unitCEU cargo electronic unitcfm cubic feet per minuteCG center or gravitycgo cargoCH channelchan channelchap chapterchar characterchg changechgr chargerchr chronographcir clearckts circuitCL center l
14、owerclb climbclg coolingclk clockclng coolingclr clearCLS continuous level sensorclsd closedcm centimeterCMD commandCMOS complementaty metal oxide semiconductorcmptr computercntl controlcntrl controlcoax coaxialcoef coefficientcol columncom commoncomb combinationcomm communicationcomnd commandcomp c
15、ompressorcomp compensate or compensatorcompt compartmentcon continuouscond condition/conditioningconfig configurationconn connectionCONT continuouscont controlcont controllerconv conversioncorr correctioncos cosinecowl cowlingCP control panelCPC cabin pressure controllerCPCS cabin pressure control s
16、ystemCPS cycles per secondCPU central processor unitCRES corrosion resistant steelCRF compressor rear framecrit criticalcrs courseCRS courseCRT cathode ray tubecrz cruiseCSD constant speed driveCSMU crash survivable memory unitCT current transformerCTA current transformer assemblyCTAI cowl thermal a
17、nti-iceCTD column timer decoderCTM cycle time monitorctn cautionctr centerctrl controlCU computer unitCU control unitCU copperCU center uppercuat customercurr currentCW control wheelCWS control wheel steeringCWS caution & waring systemD D dayD&O temperature derated takeoffD/A digital-to-analogDAC di
18、gital to analog converterDADC digital air data computerdat datumDB databasedb decibeldblr doublerdc direct currentdcdr decoderDCTCU direct current tie control unitDCV directional control valveDDU deceleration detector unitdecel deceleratedecr decreaseded dedicateddef definitiondeg degree ( angular)d
19、em demanddemux demultiplexerden. densitydep depressurizedepress depressurizationdept departmentdes descentdest destinationdet detectordet detectordet detector/detectionDEU display electronic unitdev developdevn deviationDF direction finderDFCS digital flight control systemDFDAU digital flight data a
20、cquisition unitDFDMU digital flight data management unitDFDR digital flight data recorderdftr deflectorDH decision heightdiag diagonal or diagramdiam diameterdiaph diaphragmdiff difference or differentialdig digitaldim. dimensiondim. dimmerDIP dual inline packagedir directiondisc disconnectdisc disc
21、retedisch dischargediseg disengagedisen disengagedisp dispatchdist distancedistr distribution or distributorDITS digital information transfer systemDIU digital interface unitdiv divisiondk deckDMA direct memory accessDME distance measuring equipmentDMM data memory moduleDMP data management processor
22、DMU data management unitDN downdoc. documentDP differential pressureDPCT differential protection current transformerDPDT double pole double throwDPST double pole single throw DPV directional pilot valvedr drivedsbl disableDSM display select moduleDSP display select paneldspl displaydsply displayD-TO
23、 digital to analogdty dutyDU display unitDUDB display unit data baseDV Distinguished VisitorDVM digital volt meterdwn downE E eastE emptyE/E electronic equipmentE/O enging outea eachEADI electrionic attitude direction indicatorEAROM electrically alterable read-only memoryEAU engine accessory unitEBS
24、 enging bleed systemEBU enging build-upecon economyECS environmental control systemECU electronic control unitEDP engine-driven pumpEE electronic equipmentEEC electronic engine controlEEC electronic equipment compartmentEFI electronic flight instrumentsEFIS electronic flight instrument systemEFS ele
25、vator feel shiftEFSM Elevator Feel Shift ModuleEGPWS enhanced ground proximity warning systemEGT exhaust gas temperatureEHSI electronic horizontal situation indicatorEHSV electro-hydraulic servo valveEHSV electro-hydraulic servo valveEICAS enging indicating & crew alerting systemEIS engine indicatin
26、g systemELACT electronic actuatorELCU electrical load control unitELCU electrical load control unitelec electricelev elevatorelex electronicELT emergency locator transmitterEMDP electric motor-driven pumpemer emergencyemerg emergencyEMF electromotive forceEMI electromagnetic interferenceenbl enablee
27、ncl enclose or enclosureeng engageent entertainmentEP external powerEPC external power contactorEPCS electronic propulsion control systemEPR enging pressure ratioEPROM erasable programmable read only memoryeqpmt equipmentequip equipmentESD electrostatic dischargeESDS electro-static discharge sensiti
28、veESI engine start inhibitess essentialest estimateET elapsed timeETA estimated time of arrivaletc. et cetera ( and other things)evac evacuationevap evaporatorEVBC enging vane & bleed controlEVSC engine vibration signal conditionerex exampleexc excitationexch exchangerexctr exciterexec executeexh ex
29、haustexp experimental ext extendext extinguishextd extendexting extinguisherF F fahrenheitF filterF fullF/A flight attendantF/C flight compartmentF/D flight directorF/E flighe engineerf/o first officerF/OBS first observerFAA Federal Aviation AdministrationFADEC full authority digital engine controlf
30、air FAR fax FCC flight control computerFCEU FCS FCSOV flow control and shutoff valveFCU flush control unitFCV flow control valveFD flight director (DFCS)FDAU flight data acquisition unit (DFDAU)FDEP flight data entry panelFDR flight data recorderFDRS flight data recorder systemFDS flight director sy
31、stemFF fuel flowFFCCV fan frame compressor case vertical (sensor)FFG fuel flow governor (RR engine)FGN foreignfig figurefil filamentFIM Fault Isolation ManualFL flight levelfld fieldflex flexibleflt flightflt alt flight altitudeFLT COMPT flight compartmentflt dk flight deckfltr filterfluor fluoresce
32、ntFM frequency modulationFMA flight mode annunciatorFMC flight management computerFMCS flight management computer systemFMS flight management systemFMU fuel management systemFMV fuel metering valveFO first officerfoc focalFOD foreign object damageFP fuel pressureFPA flight path angleFPGA field progr
33、ammable gate unitFPM feet per minuteFPS feet per secondFQIS fuel quantity indicating systemFQPU fuel quantity processor unitfr frontFRDS flight data recorder systemFREQ frequencyfreq frequencyFRM fault reporting manualFSB fasten seat beltFSD full scale deflectionFSEU flap/slat electronic unitFSPM fl
34、ap/stabilizer position monduleft foot/feetFTX fast transmitFU fuel usedfus fuselagefwd forwardG G or g green ( lights only)G/A go-aroundG/S glideslopegal. gallonGCB generator control breakerGCR generator control relayGCU generator control unitGE general electricgen generatorGHR ground handing relayg
35、hz gigahertzgm gramGMT greenwith mean timegnd groundgov govemorGPH gallons per hourGPM gallons per minuteGPS global positioning systemGPWC ground proximity warning computerGPWS ground proximity warning systemgr geargrd groundgrn greenGS ground speedGSB ground service busGSE ground support equipmentG
36、SR ground service relayGSSR ground service transfer relayGSTR ground service transfer relayguide guidanceGW gross weightgyro gyroscopeH H heaterH hourH/W hardwarehdg headinghdl handlehdlg handingHDS horizontal drive shafthex hexagonal or hexagonHF high frequencyHg mercuryhgr hangarHIS horizontal sta
37、bilizer indicatorHI-Z high impedancehld holdHM hydromechanicalhoriz horizontal or horizonHP high pressureHPBV high pressure bleed valveHPC high pressure compressorHPI hydraulic pressure indicatorHPSOV high pressure shutoff valveHPT high pressure turbineHPTACC high pressure turbine active clearance c
38、ontrolHPWS high pressure water separatorHQI hydraulic quanlity indicatorhr hourHSBL horizontal stabilizer buttock lineht heathtr heaterhyd hydraulicHz HertzI I/C intercommunicationI/C interphone communicationI/O input/outputIAS indicated airspeedIC integrated circuitID identificationident identifica
39、tionIDG integrated drive generatorIDU interactive display unitIFSAU integrated flight system accessory unitIGB inlet gear boxIGN ignitionIGV inlet guide vaneIGVA inlet guide vane actuatorIHC integrated handset controllerillum illuminateILS instrument landing systemimbal imbalan Ceimp imperialin inch
40、in. inchin.Hg inches of mercuryinbd inboardinc increaseind indicatorinfo informationinh inhibitinhb inhibitinit initialinop inoperableINS inertial navigation syeteminsp inspection or inspectinst instrumentinstl installation or installinstr instrumentint internalINT interphoneintk intakeintlk interlo
41、ckintph interphoneinv inverterIP intermediate pressureIPS inches per secondIR inertial referenceIRMP inertial reference mode panelIRS inertial reference systemIRU interial reference unitISA international standard atmosphereisln isolationISO inernational standards organizationISO valve isolation valv
42、eISV isolation valveJ J joulej or J or jct junctionj-box junction boxjk jackK K kelvink knotkg kilogramkgph kilograms per hourkgs kilogramskHz kilo hertzkm kilometerkn knotKPA kilopascalskt knotKTS knots (nautical miles per hour)kv kilovoltKVA kilovolt-amperekvar kilovolt amperes reactivekw kilowatt
43、sL L leftlab laboratoryland alt landing altitudelat latitudelav lavatorylb poundlbf pounds forceLBL left buttock lineLCA lateral control actuatorLCCA lateral central control actuatorLCD liquid crystal displayLCIP load compressor inlet pressureLCL localLCM logic control moduleld loadldg landingLE lea
44、ding edgeLED light emitting diodeLED leading edge devices (Flight control) LF low frequencyLG landing gearLGA landing gear cable “A“lgt lightLGTV landing gear transfer valveLGW landing gross weightlim limitlim sw limit switchliq liquidlkd lockedL-L line to lineLMS landing monitor systemL-N line to n
45、eutralLNAV lateral navigationLOC localLOC localizerlong longitudeLOP low oil pressureLO-Z low impedancelp loopLP low pressureLPC low pressure compressorlpm liters per minuteLPT low pressure turbineLPTACC low pressure turbine active clearance controlLRU line replaceable unitLSB least significant bitL
46、SK line select keyLSU lavatory service unitlt leftLT or lt lightlub lubricateLVDT linear variable differential transformerlvl levellvr leverlwr lowerM mach numberM month, minuteM/ASI mach air speed indicatorMA masterma wrn master warningMAC mean aerodynamic chordmag magnet or magneticmaint maintenan
47、cemaj majormalf malfunctionman manualmanf manifoldMASI mach airspeed indicatormax maximumMB marker beaconMCDP maintenance control display panelMCDU multi-function control display unitMCP mode control panelMCU modular concept unitMD&T master dim and testmdl moduleMEC main enging control ( GE Engine)M
48、EC main equipment centermech mechanicalmem memoryMES main engine startMEW manufacturees empty weightmgt managementMHz megahertzmic microphonemicrosw microswitchmid middlemike microphonemin minutemin minimummisc miscellaneousMKR markermkr markerml millilliterMLG main landing gearMLS microwave landing
49、 systemMM maintenance manualmm millimeterMMO mach maximum operatingMmo mach maximum operatingMMR multi-mode receiverMO monthmon monitormot motorMPD maintenance planning data documentMPH miles per hourMPU magnetic pick upMSB most significant bitMSEC milli-secondmsec millisecondsmsg messageMSL mean sea levelmst masterMSU mode select unitmt mountMTBF mean time between failuresmtg mountingMTOW maximum takeoff weightmtrg meteringMTW maximum taxi weightMU management unitmux multiplexmv millivoltsMZFW maximum zero fuel weightN N/A not applicableN1 engine low pressure rotor (fan) speedN1 low speed c
