Bombardier Abbreviations and Acronyms (Aviation)

ABBREVIATIONS AND ACRONYMS

Please be aware that this version of the Bombardier Training Manual has been updated only for the current training course(s) that you are attending, and may only be used as part of the current course(s). If you would like to continue using this version after completing the training course(s), understand that the content may become outdated. If you would like the benefit of ongoing updates, we require you to register for a subscription service for this Bombardier Training Manual at the following website: http://www.batraining.com. Bombardier Inc., by its groups, divisions, or its corporate subsidiary Learjet Inc. (collectively "Bombardier"), provides this information to its customers and to the government in confidence. This is proprietary confidential information, which we consider excluded from the application of the Access to Information Act or any other similar statute with respect to access to information, and may also be a trade secret of Bombardier. Public release of this information would be harmful to Bombardier or its corporate subsidiary Learjet Inc. Any intention to disclose such information, or part thereof, must be indicated in advance and in writing to the Vice-President Legal Services, Bombardier Aerospace. It is understood that this documentation, comprising technical data and other information in any media shall not be reproduced or disclosed, in whole or in part, without Bombardier's prior written authorization. It is proprietary and confidential to Bombardier or its corporate subsidiary Inc. All rights and all patent, copyright,or trademark, trade secrets, and other intellectualLearjet property rights herein belong to Bombardier its corporate subsidiary Learjet Inc. This documentation, technical data, and other information shall not be modified, translated, reverse assembled, reverse engineered, or decompiled and shall be used solely for training purposes. Copyright © 2004-2017 Bombardier Inc. or its subsidiaries. All rights reserved.

ABBREVIATIONS AND ACRONYMS TABLE OF CONTENTS A.................................................................................................................................... 1 B.................................................................................................................................... 7 C.................................................................................................................................... 9 D.................................................................................................................................. 15 E.................................................................................................................................. 19 F .................................................................................................................................. 23 G ................................................................................................................................. 28 H.................................................................................................................................. 30 I ................................................................................................................................... 33 J .................................................................................................................................. 37 K.................................................................................................................................. 37 L .................................................................................................................................. 37 M ................................................................................................................................. 41 N.................................................................................................................................. 44 O ................................................................................................................................. 46 P.................................................................................................................................. 48 Q ................................................................................................................................. 53 R.................................................................................................................................. 53 S.................................................................................................................................. 57 T .................................................................................................................................. 63 U.................................................................................................................................. 66 V.................................................................................................................................. 67 W................................................................................................................................. 70 X.................................................................................................................................. 71 Y.................................................................................................................................. 72 Z .................................................................................................................................. 72 Units of Measure ........................................................................................................ 73 Miscellaneous ............................................................................................................ 75 Technical Reports and Memorandums ...................................................................... 76

For Information Purposes Only Copyright © Bombardier Inc. GENRC-08.12-00.00-091217

Page i


This booklet contains abbreviations and acronyms for the following aircraft: CRJ 200 CRJ 700 CRJ 900 CRJ 1000 Challenger 300 Challenger 350 Challenger 604 Challenger 605 Challenger 650 Global Express XRS Global 5000 Global 5000 (Featuring Vision Flight Deck) Global 6000 (Featuring Vision Flight Deck) Learjet 31A Learjet 45 Learjet 45XR Learjet 60 Learjet 60XR

Some acronyms have several definitions to accommodate specific aircraft type models.

Page ii



A A

amperes aileron

A/B

autobrake

A/C

air conditioning aircraft

A/D

analog to digital

A/G

air/ground

A/I, A/ICE

anti-ice

A/L

autoland

A/N

alphanumeric

A/P, AP

autopilot

A/S A/SKID

airspeed antiskid

AAD

assigned altitude deviation

AAP

altitude awareness panel

ABN

abnormal

ABS

absolute

ABT

airborne telephone

ABV

above

AC

advisory circular alternating current

ACARS

airborne communications addressing and reporting system aircraft communications addressing and reporting system ARINC communications addressing and reporting system

ACAS

airborne collision avoidance system

ACC

aft core cowl

ACCEL

acceleration, accelerate(d), accelerometer

ACIA

asynchronous communications interface adapter

ACID

aircraft identification

ACK

acknowledge

ACM

additional crewmember air cycle machine aircraft configuration module aircraft condition monitoring

ACMP

alternating current motor pump

ACN

aircraft classification number

ACOC

air cooled oil cooler


Page 1

ABBREVIATIONS AND ACRONYMS A ACP

audio control panel

ACPC

AC power center alternating current power center

ACPDE

AC power distribution equipment

ACS

active control system

ACSB

avionics standard communication bus

ACSC

air conditioning system controller

ACSU

adjustable cam switching unit

ACT

active aircraft configuration table altitude compensated tilt altitude compensation unit

ACU

air conditioning unit

ADC

antenna control unit air data computer analog-to-digital converter

ADCPD

alternate DC power distribution

ADCU

autodeploy control unit

ADDR

address

ADF

ADF receiver automatic direction finder

ADG

air-driven generator

ADGPC

ADG power center

ADI

attitude direction indicator attitude director indicator

ADL

airborne data loader

ADLP

airborne data link processor

ADLS

airborne data link system

ADLU

airborne data link unit

ADM

air data module

ADS

air data sensor air data system automatic dependent surveillance

ADS-B ADS-C

automatic dependent surveillance-broadcast automatic dependent surveillance-contract

ADSHC

air data sensor heater controller

ADTS

air data test set

Page 2


ABBREVIATIONS AND ACRONYMS A ADV

advance advisory

ADVB

avionics digital video bus

AECU

audio electronic control unit

AEO

all engines operating

AEPC

APU/external power conductor

AES

aircraft earth station

AF

audio frequency

AFC

automatic frequency control automatic frequency compensation

AFCS

automatic flight control system

AFD

adaptive flight display

AFDA AFDT

adaptive flight display application adaptive flight display table

AFDX

avionics full duplex switched Ethernet

AFIS

airborne flight information system

AFM

Airplane (Aircraft) Flight Manual

AFN

ATS facilities notification

AGB

accessory gearbox

AGC

automatic gain control

AGHME

aircraft geometric height measuring element

AGL

above ground level

AGS

ARINC graphics server

Ah or AHr

ampere-hour(s)

AHC

attitude heading computer

AHM

attitude hold mode

AHRS

attitude heading reference system

AHS

attitude/heading system

AI

aircraft interface anti-ice

AID

aircraft installation delay aircraft interface discrepancy

AIL

aileron

AILC

anti-ice and leak detection controller

AIM

align in motion

AIP

Aeronautical Information Publications

AIPC

Aircraft Illustrated Parts Catalog


Page 3

ABBREVIATIONS AND ACRONYMS A AIS

audio integrating system

AIT

aircraft identification tag

AIU ALC

analog interface unit automatic level control

ALI

airworthiness limitations items

ALIGN

aligning, alignment

ALM

application license manager

ALN

alignment

ALS

ambient light sensor

ALT

altitude, altimeter

ALT CAP

altitude capture

ALT HOLD

altitude hold mode

ALTN

alternate

ALTS

altitude select preselected altitude

ALTS CAP

selected altitude capture

ALTSEL ALT SEL

altitude preselect altitude select

AM

amplitude modulated amplitude modulation

AMA

audio monitor adapter

AMB

ambient

AMBD AME

altitude minimums bank angle and decision height aircraft maintenance engineer amplitude modulation equivalent

AMI

alpha margin indicator

AMLCD

active matrix liquid crystal display

AMM

Aircraft Maintenance Manual

AMP, amp

amperes

AMPL

amplifier

AMTOSS

aircraft maintenance task-oriented support system

AMU

audio management unit

ANSI

American National Standards Institute

ANT

antenna

AOA

angle of attack

AOC

airline operational control air operator certificate

Page 4


ABBREVIATIONS AND ACRONYMS A AOG

aircraft on ground

AOM

Aircraft (Airplane) Operating Manual

AOR AOSS

Atlantic Ocean region after over station sensor

AP

acquisition processor autopilot

AP, A/P

audio panel autopilot

AP/EPC

auxiliary power/external power contactor

APC/EPC

auxiliary power contactor/external power contactor

APD/CL

access panel and doors/component location

API

application programming interface

APM APMT

aircraft personality module aircraft personality module table

APP, APPR

approach autopilot panel

approx, APP, APPROX

approximately

APPX

appendix

APR

approach automatic performance reserve automatic power recovery automatic power reserve air data reference panel airport reference point

APRCH

approach

APS

altitude preselect autopilot system

APSA

autopilot system application

APSBK

APS bracket

APT

airport

APU

auxiliary power unit

APU FADEC

Auxiliary power unit full authority digital engine controller

APU LC APU/EPLC

APU line contactor auxiliary power unit/external power line contactor

AR

altitude reporting as required automatic realignment

ARINC

Aeronautical Radio Incorporated


Page 5

ABBREVIATIONS AND ACRONYMS A ARM

Aircraft Recovery Manual armed

ARP

air data reference panel airport reference point

ARR

arrival

ARTCC

air route traffic control center

ARTU

airborne radio telephone unit air-radio telephone unit

AS, A/S

airspeed

ASA

aircraft separation assurance autoland status annunciator

ASCA

APU start contactor assembly

ASCB

avionics standard communication bus

ASCII

American standard code for information interchange

ASCU

antiskid control unit

ASCV

antiskid control valve

ASE

altimeter system error altimetry system error

ASEL

altitude select

ASI

airspeed indicator

ASIC

application-specific integrated circuit(s)

ASL

avionics system local area network

ASO

aircraft selectable option(s)

ASSY

assembly

ASYM

asymmetrical

AT, A/T

autothrottle

ATA

Air Transport Association

ATA 100

Air Transport Association of America specification No. 100

ATC

air traffic control

ATCRBS

air traffic control radar beacon system

ATE

automatic test equipment

ATIS

automatic terminal information service

ATLAS ATM

abbreviated test language for avionics systems air traffic management atmosphere

ATP

acceptance test procedure air transport

Page 6


ABBREVIATIONS AND ACRONYMS A ATR

ATS

air transport rack air transport radio automatic throttle retarder autothrottle retarder air traffic services air turbine starter autothrottle system

ATSC

air traffic service communication

ATSV

air turbine starter valve

ATT, ATTD

attitude, attendant

ATTCS

automatic takeoff thrust control system

ATTND

attendant

AUTH

authority

AUTO

automatic autotune

AUTO BAL

automatic balance

AUTO XFER

automatic transfer

AUX

auxiliary

AV

arming valve avionics

AVAIL

available

AVLC

aviation VHF link control

AVM

airborne vibration monitor

AWG

American wire gauge

AWM

Airworthiness Manual

AWO

all weather operations

AWS

aural warning system

B 1/2 BNK

half bank mode (PFD/FD)

B/A

bankangle

B/AIR

bleedair

B/LEAK BAPP

bleedleak BAproductionport

BARO

barometer barometric barometric pressure


Page 7

ABBREVIATIONS AND ACRONYMS B BAT,BATT

battery

BAV

bleed-airvalve buffer air valve

BC, B/C, B/CRS, BCRS

back course

BCAS

beacon collision-avoidance system

BCD

binarycodeddecimal

BCF

bromochlorodifluoromethane

BCKV

bulkheadcheckvalve

BCU

brakecontrolunit

BDC

bottomdeadcenter

BDF

binarydefinitionfile

BDI BEVS

bearingdistanceindicator Bombardier enhanced vision system

BFO

beatfrequencyoscillator

BIC

BITEinterfacechannel

BIST

built-inself-test

BIT

built-intest

BITE

built-in test equipment (software)

BIU

businterfaceunit

BK,BRK

brake

BL

buttockline

BLD

bleed

BLK

block,black

BLO

below

BLTS

belts

BLW

below

BMC

bleedmanagementcomputer bleed management controller

BMS

batterymasterswitch

BMV

brakemeteringvalve

BNK

bank

BNR

binary binary fractional notation

BOC

bottomofclimb

BOD

bottomofdescent

BOOM MIC

headset microphone

Page 8


ABBREVIATIONS AND ACRONYMS B BOT

bottom

BOV

bleed-offvalve

BPD BPCU

bypassduct buspowercontrolunit

bps

bitspersecond

BPSU

brake and position sensor unit

BPT

bleedpressuretransducer

BRG

bearing

BRKR(s)

breaker(s)

BRT

bright brightness (stroke intensity control)

BSU

beamsteeringunit

BTBR BTL

bustiebreakerrelay bottle

BTMS

brake temperature monitoring system

BTMU

brake temperature monitoring unit

BTS

bleedtemperaturesensor

BTU

Britishthermalunit

BUTE

bent-uptrailingedge

BV

bleedvalve

BYPS

bypass

C C

cabin caution center

C/A

courseacquisition

C&W

caution&warning

CAA

Civil AviationAuthority (UK)

CAC

cautionadvisorycomputer

CAD

combineraligndetector

CAI

control adapter (transponder) cowlanti-ice

CAIMS

central aircraft information maintenance system

CAIP

cowlanti-icepressure

CAIV

cowlanti-icevalve


Page 9

ABBREVIATIONS AND ACRONYMS C CAL

calibrate calories

CAP

capture

CAPT

captain

CAR

CanadianAviation Regulation

CAS

calibratedairspeed call alerter switch collision avoidance system computer airspeed crew alerting system

CAT

category clean air turbulence computer-aided testing

CATII

category II

CAUT

caution

CB,C/B

circuitbreaker

CBIT

continuousBIT continuous built-in test

CBP

circuitbreakerpanel

CBT

computer-basedtraining

CBV

cross-bleedvalve

CBW

command-by-wire cross-bleed wing cross-bleed wing valve

CC

cubiccentimeter

CCA

circuitcardassembly

CCBP

cockpit circuit breaker panel

CCDL

crosschanneldatalink

CCITT

Consultative Committee for International Telephone and Telegraph (non-English)

CCM

commoncomputingmodule

CCP

compasscontrolpanel cursor control panel

CCS

cabincommunicationssystem

CCW

counterclockwise

CDA

currentdataauthority

CDBR-(1/2)

cabin distribution bus repeater - (model 1 or 2)

CDC

controldisplaycoupler control and distribution cabinet

Page 10


ABBREVIATIONS AND ACRONYMS C CDH

clearancedeliveryhead

CDI

coursedeviationindicator

CDL CDP

configurationdeviationlist compressor discharge pressure continuous data program

CDR

criticaldesignreview

CDS

copilotdisplaysystem

CDT

compressor duct temperature (sensor)

CDTS

compressor discharge temperature sensor

CDU

controldisplayunit

CE

cabinentertainment course error

CEM CEPT

cover andenvironment module European Commission of Postal and Telecommunications

CES

cabinelectronicsystem cabin entertainment system Canadair equipment specification

CFC

carbonfibercomposite

CFG

configuration

CFIT

controlled flight into terrain

CFL

controlledflightlevel

CFM

cubicfeetperminute

CFMS

crew force measurement system crew force measuring system

CG

centerofgravity

CH

chapter

CH,CHAN

channel

CHG

change

CHGR

charger

CHIP

cockpit headset interface panel

CHK

check

CHKL

checklist

CHR CHRG

chronograph,chronometer charge charger

CHRT

chart

CI

configurationitem


Page 11

ABBREVIATIONS AND ACRONYMS C CIC

Customerinformationcenter

CICC

computer interface communication cable

CIMMS CIO

computer integrated maintenance management system commoninput/output

CIS

Commonwealth of Independent States customer issues system

CJT

coldjunctiontemperature

CK

check

CKLST

checklist

CKPT

cockpit

CKT

circuit

CL

closed

CLB,CLM

class climb

CLK

clock

CLO

closet

CLR

clear

CLSD

closed

CM

comparatormonitor configuration manager

Cm,cm

centimeter(s)

CMA

crewmessageannunciation

CMC

configuration manager application central maintenance computer

CMD

command

CMM

Component Maintenance Manual

CMOS

complementary metal oxide semiconductor

CMP, CMPS

compass

CMPTR

computer

CMR

certification maintenance requirement

CMS

cabinmanagementsystem central maintenance system

CMU CNS

communication management unit communications, navigation and surveillance

CNTR

contactor

CNTRL

control

CNUC

commanded non-uniformity correction

Page 12


ABBREVIATIONS AND ACRONYMS C CO2

carbon dioxide

COE

combineropticalelement

COM COM, COMM

common,command communication(s)

COMP

comparator compass compensation compressor

COMPT

compartment

COMPUTR

computer

COND

condition,continued

CONFIG

configuration

CONN

connection

CONT, Cont

continued contactor continuous control controller

CONV

converter

COOL

cooling

COPASS/ SARSAT

space system for the search and rescue of vessels in distress/ search and rescue satellite-aided tracking

CORR

correction

COS COSS

cosine combined overspeed shutoff solenoid combined overspeed and shutoff solenoid

COTS

commercialoff theshelf

COU

combinerunit

CP

crosspointer

CPAM

cabin pressure acquisition module

CPAS

Collins portable access system

CPC

cabinpressurecontroller computer program component

CPCP CPCS

cabin pressure control panel cabin pressure control system cabin pressurization control system

CPDF

cabin packet datafunction

CPDLC

controller-pilot data link communications


Page 13

ABBREVIATIONS AND ACRONYMS C CPE

controlpanelelectronic

CPL

couple,coupled

CPLR CPLT, C/PLT

coupler copilot

cpm

cyclesperminute

CPN

Collinspartnumber

CPNOH

compressor pneumatic overheat compressor pneumatic overheat sensor

CPOST

computer power-on self-test

CPS

centralprocessingsystem

cps

cyclespersecond

CPT

cockpitprocedurestrainer

CPU CR

centralprocessingunit contrastratio

CRC

cyclicredundancycheck

CRM

crewresourcemanagement cockpit resource management

CRS

course

CRT

cathode-raytube

CRZ

cruise

CS

cross side

CSD

constantspeeddrive

CSDB

Collinsserialdatabus control system data bus

CSEU

control system electronics unit

CSMA

carrier sense multiple access

CSMU

crash-survivable memory unit

CSO

customerselectableoption

cSt

centistroke

CSU

central/configuration strapping unit

CSV

coldstartvalve

CT

controltransformer

CTA

current transformer assembly

CTC

contact,contactor

CTL

COMM/NAVtuningunit control

CTP

controltuningpanel

Page 14


ABBREVIATIONS AND ACRONYMS C CTR

center

CTRD

Canadair Technical Requirements Document

CTRL CTU

control cabin telecommunications unit

CU

computerunit

CURLIM

current limiter

CVG

compressor variable geometry

CVGA

compressor variable geometry actuator

CVR

cockpitvoicerecorder

CVS

combinedvisionsystem

CW

centerwing clockwise

CWP

continuous wave crewwarningpanel

CWS

centralwarningsystem control wheel steering

CWTS

control wheel trim switch

CYL

cylinder

D D/A

digitaltoanalog

D8PSK

differential 8-ary phase shift keying

DA

decisionaltitude drift angle

DAB

digitalaudiobus

DABS

discrete addressable beacon system

DAC

dataacquisitioncomputer digital to analog converter

DADC

digital air data computer

DADS

digitalairdatasystem

DAP

digitalaudioplayback

DAU

dataacquisitionunit

DB DB, db

database decibel(s)

DBM

databasemanager

DBU

databaseunit


Page 15

ABBREVIATIONS AND ACRONYMS D DC

directcurrent display controller

DCE

datacommunicationequipment

DCM

dataconcentrationmodule data concentrator module (Rockwell Collins)

DCMP

direct current motor pump

DCP

displaycontrolpanel

DCPC

DCpowercenter direct controller pilot communication

DCS

dataconcentrationsystem

DCT

direct

DCU

dataconcentratorunit directional control unit

DCV

directionalcontrolvalve

DDA

digital differential analyzer

DDI

datadeliveryinterface

DDM

difference in depth of modulation

DDP

displaydatapage display dimming panel

DDRAM

double data random access memory

DDS

datadeliveryservice

DDU

digitaldisplayunit

DE-SEL

de-select

DEC

decrement

DECEL

decelerate(d)

DECR

decrease

DEEC

digital electronic engine control

DEFL

deflection defuel

DEG

degree(s)

DEGRAD

degraded

DEL

delete

DEMOD DEP

demodulator dataentryplug departure deployed

DEPR

depressurize

DEPT

departure

Page 16


ABBREVIATIONS AND ACRONYMS D DES

descent, descent mode (PFD/FD)

DESCRIPT

description

DEST DET

destination detector detent

DEV, DEVN DEV(N)

deviation

DF

downlinkformat

DFA

directionfindingantenna

DFCS

digital flight control system

DFDAU

digital flight data acquisition unit

DFDR

digital flight data recorder

DFT DFTRT

drift driftrate

DFU

digitalfunctionunit

DG

dedicatedgenerator directional gyro

DGC

displayguidancecomputer

DGPS

differentialGPS

DGRAD

degraded

DH

decisionheight

DHM

displayheadmodule

DHX DI

dualheatexchanger dailyinspection

Dia.

diameter

DIFF

difference differential

Dim.

dimension

DIP

datainterruptprogram dual in-line package

DIR

direct director

DIS DISC

distance disconnect

DISCH

discharge

DISP

dispatch display


Page 17

ABBREVIATIONS AND ACRONYMS D DISPL

displacement

DIST

distance

DITS DL

digital interface transfer system data link downlink

DLCA

data link communication application

DLCS

data link communication system

DLDR

dataloader

DLL

dynamiclinklibrary

DLNA

diplexer/low noise amplifier

DMA

directmemoryaccess display manager application

DMC

data data concentrator concentratormodular modulecabinet cabinet DCU module cabinet

DME

distancemeasuring equipment

DMEHOLD

DMEhold

DMM

digitalmultimeter

DMU

datamanagementunit

DN

down

DNLK, DNLCK

downlock

DOC

documentation

DOS DOT

diskoperatingsystem Department of Transport (Canada)

DP

differentialpressure display processor

DPDT

doublepoledoublethrow

DPI

differential pressure indicator

DPL

detailedpartslist

DPSK

differential phase shift keying

DR

deadreckoning door

DRA DRC

diagnostic and reporting application dualremotecompensator

DRV, DRVR

driver

DRVSM

domestic reduced vertical separation minimum

DSB

doublesideband

Page 18


ABBREVIATIONS AND ACRONYMS D DSDD

double-sided double-density

DSK

double-stackknob

DSM

digital module digitalswitch switching module

DSP

datalinkserviceprovider digital signal processor display select panel

DSPL, DSPLY

display

DT

date drain tank

DTE

dataterminalequipment drain tank ejector

DTG

distance-to-go

DTMF

dual tonemultifrequency dual tone multiple frequency

DTO

directto

DTRK, DTK

desired track

DTS

ducttemperaturesensor

DTU

datatransferunit

DU

displayunit

DUP

duplicate duplex

DWM

displaywindowmanager

E E

elevator

e.g.

lat. exempli gratia (for example)

EADI

electronic attitude direction indicator electronic attitude director indicator

EAK

encryptedapplicationkey

EAROM

electrically alterable read-only memory

EAS

equivalentairspeed

EASA EBBC

European Aviation Safety Agency emergency bus breaker contactor

EBU

enginebuildunit

ECA

electronic charts application


Page 19

ABBREVIATIONS AND ACRONYMS E eCDU ECDU

electronic control display unit emulated control display unit

ECKV

emergencycheckvalve

ECL

electronicchecklist emitter coupled logic

ECM

electroniccontrolmodule

ECP

EICAScontrolpanel engine configuration plug

ECR

engineeringchangereport excessive closure rate

ECS

environmental control system

ECTM

engine condition trend monitoring

ECU

electroniccontrolunit environmental control unit external compensation unit

ED

electronicdisplay

ED1

EICASprimarydisplay

ED2

EICASsecondarydisplay

EDC

extendeddrycrank

EDHP

engine driven hydraulic pump

EDM

emergencydescentmode

EDP

electrical distribution panel engine-driven hydraulic pump

EDR

engine-driven pump excessivedescentrate

EDS

electronicdisplaysystem engine diagnostic system

EDU

electronicdisplayunit engine diagnostic unit

EEC

electronic engine controller electronic engine control engine electronic controller

EED

engineexceedancedata

EEPROM

electrically erasable programmable read-only memory

EEROM

electrically erasable read only memory

EETS

electronic engine trim system

EFB

electronicflightbag

EFCS

electronic flight control system

EFD

electronicflightdisplay

Page 20


ABBREVIATIONS AND ACRONYMS E EFIP

electronic flight instrument processor

EFIS

electronic flight instrument system

EFVS EGNOS

enhanced flight vision system European Geostationary Navigation Overlay Service (System)

EGPWS

enhanced ground proximity warning system

EGT

exhaustgastemperature

EGV

exitguidevane

EHP

electricalhydraulicpump

EHS

enhancedsurveillance

EHSI

electronic horizontal situation indicator

EHSV

electrohydraulic servovalve

EHV

electrohydraulicvalve

EIA

Electronic Industries Association

EICAS

engine indicating and crew alerting system (Honeywell) engine indication and crew alerting system (Rockwell Collins)

EIRP

effective isotropic radiated power

EIS

engineindicationsystem

EJB

electronicjunctionbox

EL,ELEV

elevator elevation

ELEC, ELECT

electric, electrical

ELS

electroniclibrarysystem

ELT

elementary surveillance emergency locator transmitter

EM

electricalmodule

EMA

enhancedmapsapplication

EMC

electromagnetic compatibility

EMER LTS

emergency lights

EMER(G), EMG

emergency

EMF, emf

electromotive force

EMI

electromagnetic interference

EMS

electrical management system

EMS CDU

electrical management system control display unit

ENC

encoder(altitude)

ENG

engine,engage

ENGAGE

engagement


Page 21

ABBREVIATIONS AND ACRONYMS E ENT

enter

EO

EngineeringOrder,easyon

EOL EP

end-of-list externalpower

EPAV

electropneumatic actuating valve

EPC

externalpowercontactor

EPCU

external power control unit

EPDS

electrical power distribution system

EPGDS

electrical power generation and distribution system

EPGS

electrical power generating system

EPLC

external power line contactor

EPLD

electronically programmable logic device

EPM

erasable programmable logic device externalpowermonitor

EPMU

external power monitoring unit

EPPR

external power-ready relay

EPQM

external power quality monitor

EPR

enginepressureratio

EPROM

erasable programmable read-only memory

EPSP

electrical power services panel

EPTC

essential power transfer contactor

EPU

EICASroutingunit estimated position of uncertainty

EQUIP

equipment

ER

error code

ERP

EFISreferencepanel eye reference position datum

ERR

error

ERU

EICASroutingunit

ESAS

enhanced situation awareness system

ESD

electrostaticdischarge

ESDS

electrostatic discharge sensitive

ESIS

electronic standby instrument system

ESS

essential

ESSD

electrostatic sensitive device

ET

elapsedtime

Page 22


ABBREVIATIONS AND ACRONYMS E ETA

estimatedtimeofarrival

ETC

essentialbustiecontactor

etc. ETD

etcetera(andsoforth) enginetrenddata estimated time of departure

ETE

estimatedtimeenroute

ETOPS

extended-range operation

ETTC

essential TRU tie contactor essential TRU transfer contactor

ETTS

electronic thrust trim system

EUR RMA

European Regional Monitoring Agency

EUROCONTROL

European Control

EVAC

evacuate evacuation

EVM

electronicvoltmeter engine vibration monitor engine vibration monitoring

EVMS

engine vibration monitoring system

EVMU

engine vibration monitoring unit

EVS

enhancedvisionsystem

EVSHC

enhanced vision system heater controller EVS heater controller

EXLOC

expandedlocalizer

EXEC

execute

EXH

exhaust

EXT

extend external extinguisher

EXT PWR

external power

EXTIN

extinguish(ed)

F F/CTL F/O,FO

flightcontrols firstofficer

FAA

Federal Aviation Administration (USA)

FADEC

full authority digital engine control full authority digital engine controller fully automated digital engine control


Page 23

ABBREVIATIONS AND ACRONYMS F FAF

finalapproachfix

FAI

firstarticleinspection

FAIL FANS

failure future air navigation system(s)

FAR

Federal Aviation Regulations

FAV

fanairvalve

FAX

facsimile

FBC

frontbearingchamber

FC

footcandle full close

FC DIAG

fault code diagram

FC INDEX

fault code index

FCC

Federal Communications Commission flight control computer forward core cowl

FCM

flight control module (inside flight control unit)

FCN

function

FCOC

fuelcooledoilcooler

FCOM

Flight Crew Operating Manual

FCP

flightcontrolpanel

FCS

flightcontrolsystem

FCSA

flight control system application

FCSSU FCST

flash crash-survivable store unit flight control system table

FCU

flapcontrolunit flight control unit fuel control unit

FCV

flowcontrolvalve

FD,F/D

flightdirector flight display

FDAU

flight data acquisition unit

FDBCK

feedback

FDC FDCU

flightdirectorcomputer flight data conversion unit

FDE

flightdeckeffects fault detection and exclusion

FDG

flightdirectorguidance

Page 24


ABBREVIATIONS AND ACRONYMS F FDGS

fandrivegearsystem

FDI

flightdirectorindicator

FDR

feeder flight data recorder

FDR SSPC

feeder SSPC

FDS

flightdirectorsystem flight display system

FDSA

flight display system application

FDU

fluxdetectorunit

FECU

flap electronic control unit

FEE

failureeffectevaluation

FEED

feeder

FET FF,F/F

fieldeffecttransistor fuelflow

FFS

fullflightsimulator

FG

flightguidance

FGC

flightguidancecomputer

FGFP

FMS graphical flight planning

FGP

flightguidancepanel

FGS

flightguidancesystem

FI

flightidle

FIC

faultisolationchart

FIDEEX

fire detection and extinguishing (control unit)

FIFO

first-infirst-out

FIM

FaultIsolationManual

FIMCNTS

FIMcontents

FIR

fullindicatorreading flight information region

FIREBTL

firebottle

FIREX

fireextinguisher

FIT

flightintoterrain

FIU

forwardinterfaceunit

FL

flightlevel foot-lambert

FL MTCE, FLM

flight line maintenance

FLC, FLCH

flight level change

FLD

field


Page 25

ABBREVIATIONS AND ACRONYMS F FlexCL

flexibleclimb

FlexTO

flexibletakeoff

FLIR FLT

forwardlookinginfrared flight flight time

FLTA

forward-looking terrain avoidance

FLT CONT MON

flight control monitor(ing)

FLTDIR

flightdirector

FLTPLN

flightplan

FLT SPLR

flight spoiler

FLUOR

fluorescent

FLX

flexibleorreducedthrust

FM

fan marker frequency modulation

FMA

flightmodeannunciator

FMC

flightmanagementcomputer

FMCA

flight management computer application

FMCW

frequency-modulated continuous wave

FMF

flightmanagementfunction

FMH

faultmessagehistory

FMQGC

fuel management and quantity gauging computer

FMQGS

fuel management and quality gauging system

FMS

fuel management and quantity gauging system flightmanagementsystem

FMS CDU

flight management system control display unit

FMSA

flight management system application

FMU

fuelmeteringunit

FMV

fuelmeteringvalve

FO

full open

FOC

fueloilcooler full operational capability

FOD

foreignobjectdamage

FOM

foreign object debris figureofmerit

FOV

fieldofview

FPA

flightpathangle focal plane array

Page 26


ABBREVIATIONS AND ACRONYMS F FPAC

flight pathacceleration

FPARC

flight path angle reference cue

FPIU FPLN, FPL

flap position indication unit flight plan

fpm

foot(feet)perminute

FPM

flightpathmarker

fps

foot(feet)persecond

FPU

flappowerunit

FPV

flightpathvector

FQC

fuelquantitycomputer

FQGC

fuel quantity and gauging computer

FQGS

fuel quantity gauging system

FR,FRM

fuel quantity and gauging system from

FREQ

frequency

FRMT

format

FRTT

fuelreturntotank

FS

fuselagestation

FSA

fileserverapplication

FSC

fuelsystemcomputer

FSCL

flight spoiler control lever

FSCU

fuel systemcomputer unit

FSE

fieldserviceengineer

FSEU

flaps/slats electronic unit

FSM

fieldservicemonitor

FSN

fuelspraynozzle

FSOV

fuelshutoffvalve

FSR

fieldservicerepresentative

FSTBY

forcedstandby

FSU

fileserverunit

FSV

flowsensorventuriS/A

FT

flighttime forecast terminal functional test

ft-lb

foot-pound(s)

FT,ft

foot,feet


Page 27

ABBREVIATIONS AND ACRONYMS F FTD

flighttrainingdevice

FTM

fault tolerance microprocessor

FTU FUSE

forcetransducerunit fuselage

FV

flux valve

FW

failurewarning

FW,F/W

firewall

FWC

faultwarningcomputer

FWD

forward

FWSOV

firewall shutoff valve

G G

gain gravitational force gravity

g

gram G-force

G(+/-)

receivergain

G/A,GA

go-around

G/S,GS

glideslope groundspeed ground spoiler

GAGAN GAL,gal

GPS Aided Geo Augmented Navigation (India) gallon

GALY

galley

Gb

gigabit

GB

gigabyte

GC

guidancecontroller

GCA

geometriccontourapproval

GCD

generatorcontactor driver

GCR

generatorcontrolrelay

GCS

generatorcontrolswitch ground clutter suppression

GCTA

generator current transformer assembly

GCU

generatorcontrolunit

GDC

globaldatacenter

GDU

dataunit(Garmindataunit)

Page 28


ABBREVIATIONS AND ACRONYMS G GEN

generator

GES

groundearthstation

GEX GFI

GlobalExpress generalformatidentifier

GFP

graphicalflightplanning

GFRP

glass fiber reinforced polymer

GHSI

ground handling and servicing information

GHz

gigahertz

GI

groundidle

GIFD

integrated flight deck (Garmin integrated flight deck)

GLC

generatorlinecontactor

GLCG

generator line contactor-generator section

GLCR

generator line contactor relay

GLD

groundliftdumping

GMAP

groundmapping

GMO

groundmaintenanceoverride

GMT

Greenwichmeantime

GMU

GPSmonitoringunit

gn

standardacceleration due to gravity

GND CLTR SPRS

ground clutter suppression

GND SPLR

ground spoiler

GND, GRD, GRND ground GNS globalnavigationsystem GNSS

global navigation satellite system

GNSSU

global navigation satellite sensor unit global navigation system sensor unit

GP

generalpurpose guidance panel

GPH, gph

gallons per hour

GPM, gpm

gallons per minute

GPS

globalpositioningsystem

GPSSU GPU

global positioning system server unit groundpowerunit

GPWC

ground proximity warning computer

GPWR

groundpower

GPWS

ground proximity warning system


Page 29

ABBREVIATIONS AND ACRONYMS G GR

gear

GRAV

gravity

GRBOX GRP

gearbox geographicalreferencepoint

GS,G/S

glideslope groundspeed ground spoiler

GSA

groundspoileractuator

GSC

groundservicecontactor

GSD

glideslope/glide path deviation

GSE

groundsupportequipment

GSL

geodeticsealevel

GSM GSP

groundservicemode glareshieldpanel ground service panel

GSPD

groundspeed

GSSV

ground spoiler selector valve

GTC

generator transfercontactor touchscreen controller (Garmin touchscreen controller)

GTCP

gas turbine compressor pneumatic

GTOW

grosstakeoffweight

GUI

graphicaluserinterface

GUIDE GV

guidance groundvalve

GW

grossweight

GWX

graphicalweather airborne weather radar

H H

altitude(height) hold or high-speed profile

h

hour(s)

H’MIC

hotmicrophone

H/W

hardware

HAA

heightaboveairport

HASOV

hot air shutoff valve

HAT

heightabovetouchdown

Page 30


ABBREVIATIONS AND ACRONYMS H HBMU

heater/brake temperature monitoring unit heater and brake management unit

HCM

high-speed data configuration module

HCM/C

heater current monitor/controller

HCP

head-upcontrolpanel

HCU

humidifiercontrolunit

HDA

HUDdisplayapplication

HDG

heading

HDGSEL

headingselect

HDLC

high-level data link control

HDOP

horizontal dilution of precision

HDPH

headphone

HEAT HF

heater highfrequency

HFDS

head-up flight display system

HFS

highfrequencysystem

Hg

mercury

HGA

highgainantenna

HGC

head-upguidancecomputer HUD graphics display processing card

HGS

head-upguidancesystem

HHLD

headinghold

HI

high

HIC

headinjurycriteria

HIRF

high intensity radiated field

HLD

hold

HLDR

holder

HLS

high-levelsensor

HM

healthmonitor

HMA

HUDmonitorapplication

HMDG

hydraulic motor-driven generator

HME HMOS

heightmonitoringelement high-density metal oxide semiconductor

HMP

high power amplifier main processor

HMU

heightmonitoringunit hydromechanical metering unit hydromechanical unit


Page 31

ABBREVIATIONS AND ACRONYMS H HNDWHL

handwheel

HOR, HORIZ

horizontal

HOT HP

highoiltemperature highpressure

hp

horsepower

HPA

highpoweramplifier

HPA, hPa

hectopascals

HPC

high-pressurecompressor

HPGC

high-pressure ground connection

HPLFD

protection level for fault detection

HPLWAAS

horizontal protection level for WAAS

HPR

highpowerrelay

HPSOV

high-pressure shutoff valve

HPT

high-pressureturbine

HPV

high-pressurevalve

hr.,HR

hour

HRD

highratedischarge

HS

horizontalstabilizer high speed

HSDB

high-speeddatabus

HSDU

high-speeddataunit

HSI

horizontal situationindicator hot section inspection

HSL

headingselect

HSR

highstabilityreference

HST

high-speed SATCOM transceiver

HSTA

horizontal stabilizer trim actuator

HSTCS

horizontal stabilizer trim control system

HSTCU

horizontal stabilizer trim control unit

HSTECU

horizontal stabilizer trim electronic control unit

HT

heat

HTR HUD

heater head-updisplay

HV

highvoltage

HVPS

high-voltage power supply

HW,HWR

Page 32

hardware


ABBREVIATIONS AND ACRONYMS H HX

heatexchanger

HYD, HYDRO

hydraulic

HZ,Hz

hertz(frequency)

I i.e.

that is

I/B

inboard

I/C

inspectioncheck intercom

I/F

interface

I/O,IO

input/output

I/P

input

IAC

integratedavionicscomputer

IAMS

integrated air management system

IAPS

integrated avionics processor system

IAS

indicatedairspeed

IASC

integrated air system controller

IAU

integratedavionicsunit

IAW

inaccordancewith

IBIT

initiatedbuilt-intest

IBR

integralbladedrotor

IC IC/SG

intercom integrated computer/signal generator

ICAO

International Civil Aviation Organization

ICC

IAPScardcage

ICD

interfacecontroldocument interface control drawing

ICDU

integrated control display unit

ICP

interphonecontrolpanel

ICPF

ICDUpagefunction

ICS

idlecorrectedspeed

ICTA

instrument current transformer assembly

ICU

integratedcommunicationunit internal compensation unit interphone control unit isolation control unit

ICV

isolationcontrolvalve


Page 33

ABBREVIATIONS AND ACRONYMS I ID

insidediameter identification number

ID, IDENT

identification, identifier

IDE

integrateddriveelectronics

IDG

integrateddrivegenerator

IDS

instrumentdisplaysystem integrated display system

IDX

index

IEC

IAPS environmental control module IAPS environmental controller environment controller

IEEE

Institute of Electrical and Electronics Engineers

IESI

integrated electronic standby instrument

IEU

interphoneelectronicunit

IF

intermediatefrequency

IFF

identificationfriendorfoe

IFIS

integrated flight information system

IFR

instrumentflightrules

IFS

innerfixedstructure

IGA

intermediategainantenna

IGN

ignition

IGV

inletguidevane

ILM ILS

independentlandingmonitor instrumentlandingsystem

ILS PRM

instrument landing system with precision runway monitoring

IM

innermarkerbeacon

IMA

integrated modular application integrated modular avionics

IMAT

integrated modular avionics table

IMC

instrument meteorological conditions

IML

innermoldline

IMN

indicatedMachnumber

IMO IMP

International Maritime Organization imperial

IMS

informationmanagement system

IMSA

information management system application

Page 34


ABBREVIATIONS AND ACRONYMS I IMT

instrumentmountingtray integrated maintenance test

IMU

inertialmeasurementunit

IN Hg, inHg

inch(es) of mercury

IN,in.

inch,inches

in/s, ips

inch(es) per second

INBD

inboard,inbound

INC

increment

INC-DEC

increase-decrease

INCR

increase

IND

indication indicator

INFLT INH, INHB, INHIB

inflight inhibit

INIT

initialize,initiated

INMARSAT

International Maritime Satellite Organization

INOP

inoperative

INPH

interphone

INS

inertialnavigationsystem

INSP

inspection

INST, INSTR

instrument

INSTL

installation

INT

integral internal interphone intersection internal time

INT/SVC

intercom/switch volume control

INTC

intercept

INTGL, INTEG

integral

INTLK

interlock

INU

integratednavigationunit

INV IOC

invert initial operational capability input/output concentrator

IOCT

input/output concentrator table

IOI

imminentobstacleimpact


Page 35

ABBREVIATIONS AND ACRONYMS I IOM

input/outputmodule

IOP

independent overspeed protection input/output processor

IOT

input/outputtranslator

IP

informationprovider internet protocol

IPC

IllustratedPartsCatalog integrated processing center integrated processing cabinet

IPPT

intermediate port pressure transducer

ips,in/s

inchpersecond

IPS

integratedprocessingsystem

IPSA

integrated processing system application

IPV

inletpressurizingvalve

IR

infrared inertial reference

IRC

instrumentremotecontroller

IRS

inertialreferencesystem

IRU

inertialreferenceunit

IRW

infraredwindow

ISA

international standard atmosphere international standard atmosphere temperature

ISDN

integrated services digital network

ISDU

inertial system display unit

ISI

integratedstandbyinstrument

ISIS

integrated standby instrument system

ISO

International Standards Organization

ISOL

isolated isolation

ISS

infraredsensorsystem

ISU

infraredsensorunit initial signal unit

ITEM

Illustrated Tool and Equipment Manual

ITI

imminentterrainimpact

ITT

interstageturbine temperature interturbine temperature

ITU

International Telecommunications Union International Telephone Union

Page 36


ABBREVIATIONS AND ACRONYMS I IVSI

inertial lead vertical speed indicator instantaneous vertical speed indicator

IVV

inertialverticalvelocity

J J-FET

junction field effect transistor

JAA

Joint Aviation Authorities (Europe)

JAR

JointAviationRequirements

JB

junctionbox

JEMTOSS

jet engine maintenance task-oriented support system

JIC

jobinstructioncard

JS

joystick

K Kbps

kilobitpersecond

KBps

kilobytepersecond

KCAS

knots calibratedairspeed

KEAS

knots equivalent airspeed

kg

kilogram(s)

kHz

kilohertz

KIAS

knots indicatedairspeed

km

kilometer(s)

KOZ

keepoutzone

KPA, kPa

kilopascal(s)

KPH, kph

kilograms per hour

kt,K,KT

knot(s)

KTAS

knotstrueairspeed

KVA, kVA

kilovolt-ampere(s)

kW

kilowatt(s)

L L

left,landing

L-Band

frequencyrange

L, l L/C

liter(s) inductive/capacitive


Page 37

ABBREVIATIONS AND ACRONYMS L L/HIRF

lightning/high intensity radiated field

L/M

listofmaterials

L/T LAAS

landing/taxi local area augmentation system

LADV

lineadvance

LAN

localareanetwork

LASER

Learjet aircraft status evaluation report

LAT

lateral latitude

LAV

lavatory

lb-in.

pound-inch

LB,lb

pound(s)

lb/hr, pph lb/min, ppm

pounds per hour (or pph, depending on panel) pounds per minute (or ppm, depending on panel)

lbf

pound(force)

LBL

leftbuttockline,label

LBS

lateralbeamsensor

LCD

liquidcrystaldisplay

LCN

loadclassificationnumber

LCTA

line current transformer assembly

LCV

levelcontrolvalve load control valve

LD

lower-sideband

LDA

localizerdirectionalaid

LDG

landing

LDGGR

landinggear

LDG/TAXI

landing/taxi

LDI

loadable diagnostic interface

LDPS

lampdimmerpowersupply

LDS

lightningdetectionsystem

LDU

lampdriverunit

LE,L/E LED

leadingedge light-emittingdiode

LES

landearthstation

LEV

level

LF

lowfrequency(30to300kHz)

Page 38


ABBREVIATIONS AND ACRONYMS L LG, L/G LG

landing gear leg

LGA

lowgainantenna

LGC

landinggearcontroller

LGCL

landing gear control lever

LGCU

landing gear control unit

LGDCIS

landing gear and door control and indication system

LGECU

landing gear electronic control unit

LGW

landinggrossweight

LH,L/H

lefthand

LHP

lightningHIRFprotection

LHS

left-handside

LIM LIRS

limit laser inertial reference system

LMS

learningmanagementsystem load management system

LN

left nose

LNA

lownoiseamplifier

LNAV

lateralnavigation

LNAV/VNAV

lateral/vertical navigation

LNS

LORAN/long range navigation system

LO

low

LOA

letterofauthorization

LOC

localizer local time

LOC-BC

localizer back course

LOFT

line operational flight training

LOGO

logographic

LOI

lossofintegrity letter of intent

LOM

locatoroutermarker

LONG, LON

longitude

LOP

lowoilpressure

LORAN

long range navigation

LP

lowpressure

LPC

low-pressurecompressor

LPM

literperminute


Page 39

ABBREVIATIONS AND ACRONYMS L LPT

low-pressureturbine

LPV

localizer performance with vertical guidance

LR LRA

left rear lowrangeradioaltimeter

LRC

longrangecruise

LRD

lowratedischarge

LRM

linereplaceablemodule

LRN

longrangenavigation

LRU

linereplaceableunit

LS

low speed

LSA

lowspeedawareness

LSB

leastsignificantbit

LSD

lower sideband leastsignificantdigit

LSI

large-scaleintegration

LSK

lineselectkey

LSS

lightningsensorsystem

LSW

lowspeedwarning

LSWD

lowspeedwarningdevice

LT

light local time

LTG

lighting

LTR

letter

LTRK

lasertrack(NDU)

LTS, LT(S)

light(s)

LV

lowersidebandvoice low voltage

LVDT

linear variable differential transformer linear variable differential transducer

LVLCHG

levelchange

LVPS

low-voltagepower supply

LVT

linearvariabletransducer

LW

left wing

LWD

leftwingdown

LWR

lower

LX

lightning

Page 40



M M

Mach

m

meter(s)

M/C,MC

mastercaution

M/P

map/plan

mA

milliampere(s)

MAA

microwaveairborneantenna

MAC

meanaerodynamicchord media access control

MADC

microairdatacomputer

MAG

magnetic

MALF

malfunction

MAN MAR

manual maritime

MASI, M/ASI

Mach airspeed indicator

MASPS

minimum aircraft system performance specification

MAT

maintenanceaccess terminal

MAX,max

maximum

MB

markerbeacon megabyte

mb

millibar(s)

Mbps

megabitpersecond

MBps MCA

megabytepersecond minimumcrossingaltitude

MCD

magneticchipdetector

MCDU

multifunction control and display unit multifunctional control display unit

MCIA

maintenance computer interface adapter

MCL

maximumclimb

MCM

MaintenanceControlManual

MCOS

maintenance computer operating system/software

MCR

maximumcontinuouscruise maximum cruise maximum cruising rate

MCS

maximumcorrectedspeed

MCT

maximumcontinuousthrust


Page 41

ABBREVIATIONS AND ACRONYMS M MCU

motorcontrolunit modular component unit

MDA

minimumdescentaltitude

MDC

maintenance diagnostic computer

MDS

maintenance diagnostic systems

MDU

motordriveunit

MEA

minimumenroutealtitude

MEF

mainexciterfield main excitation field

MEL

MinimumEquipmentList

MEM

memorymodule

MES

mainenginestart

METAR MFC

meteorological report aviation routine mechanicalfuelcontrol

MFD

multifunctiondisplay

MFS

multifunctionspoiler

MFW

multifunctionwindow

mg

milligram

MGMT

management

MGT

management measured gas temperature

MGW

maingearWOW

MHB MHz

maximumhalfbreadth megahertz

mi

mile(s)

MI

indicatedMachnumber

MIC

microphone

MIC STK

microphonestuck

MID

medium

mil

one-thousandthofaninch

MIN,min

minimum,minute

MIO

MKPinput/output

MISC

miscellaneous

MISCOMP MISCMP

miscompare

MISMTCH

mismatch

MIXM

mixmanifold

Page 42


ABBREVIATIONS AND ACRONYMS M MIXTS

mix manifold temperature sensor

MKP

multifunction keyboard panel

MKPA MKR

multifunction keyboard panel application marker marker beacon

ml

milliliter

MLG

mainlandinggear

MLI

magneticlevelindicators

MLS

microwavelandingsystem

MLW

maximumlandingweight

MM

middlemarker

mm

millimeter(s)

mm/s MMEL

millimeter(s)persecond Master Minimum Equipment List

Mmo, MMO

maximum Mach operating speed

MMS

manualmodesolenoid

MNPS

minimum navigation performance specification

MOCA

minimum obstruction clearance altitude

MODSUM

modification summary

MODUL

modulating

MOM

momentary

MON

monitor

MOP

mainoilpressure

MOT

mainoiltemperature

MPD

Maintenance Planning Document

MPDS

mobile packet data service

MPEL

maximum permissible exposure level

mph

milesperhour

MPI

magnetic particleinspection

MPSOV

minimum pressurizing shutoff valve

ms

millisecond(s)

MS MSAS

modificationsummary Ministry of Transportation Satellite Augmentation System (Japan)

MSAT

maintenance system analysis tool

MSB

mostsignificantbit


Page 43

ABBREVIATIONS AND ACRONYMS M MSCMP

miscompare

MSD

modestatusdisplay

msg,MSG MSI

message Machspeedindicator

MSK

minimumshiftkeying

MSL

meansealevel

MSP

modeselectpanel

MSU

modeselectunit

MSW

controlwheel masterswitch master disconnect switch

MT

trueMachnumber

MTBF

meantimebetweenfailure

MTC MTD

minimumterrainclearance mastertime/date

MTES

maintenance test enable switch

MTO

maximumtakeoff

MTOW

maximumtakeoff weight

MTSAT

multifunctional transport satellite

MU

managementunit

MUX

multiplexer

mV

millivolt

MW

masterwarning

MW/MC

master warning/master caution

MWW

mainwheelwell

MZFW

maximumzero fuelweight

N N•m N/A,NA

Newtonmeter notapplicable

N/W

nosewheel

N1

speed of low-pressure compressor (fan speed)

N2

speed of high-pressure compressor (core speed)

NAARMO

North American Approvals Registry and Monitoring Organization

NAC

nacelle

NACA

National Advisory Committee for Aeronautics

NAS

NationalAirspaceSystem

Page 44


ABBREVIATIONS AND ACRONYMS N NAT

NorthAtlantic

NATO

North Atlantic Treaty Organization

NAV NAVAID

navigation navigationalaid

NB

narrowbandwidth

NBAA

National Business Aircraft (Aviation) Association

NC

navigationcomputer no connection normally closed

NCD

nocomputeddata

NCR

negativeclimbrate

NCT

networkconfigurationtable

NCU ND

navigationcomputerunit navigationdisplay nose down

NDA

nextdataauthority

NDB

nondirectionalbeacon navigation database

NDO

networkdataobjects

NDS

navigationdatabaseserver

NDU

navigationdisplayunit

NEG

negative

NFF NG

nofaultfound nose gear

NGV

nozzleguidevane

NGW

nosegearWOW

nicad, NiCad

nickel-cadmium

NL

nose left

NLG

noselandinggear

nm,NM

nauticalmile(s)

NO

normallyopen

no.

number

NOAA

National Oceanic and Atmospheric Administration

NOC

NAVoncourse

NORM

normal

nos.

numbers

NOSE

nosewheel


Page 45

ABBREVIATIONS AND ACRONYMS N NOTAM

noticetoairmen

NOVRAM

non-volatile random access memory

NP NPA

nonprocurable non-precisionapproach

NR

nose right

NRV

nonreturnvalve

ns

nanosecond

NU

nose up

NUC

non-uniformitycorrection

NVI

nonvectoredinterrupt

NVM

non-volatilememory

NWS

nosewheelsteering

O O/L

overload

O/P

output

OAT

outsideairtemperature

OB, O/B, OUTBD

outboard

OBS

observer omnibearing selector omnibearing synchro (selector)

OBV

operabilitybleedvalve

OC,O/C

oncourse overcurrent

OCM

option configurationmodule option control module

ODL

onboarddataloader

ODLA

onboard data loader application

OEI

oneengineinoperative

OEM

original equipment manufacturer

OEO

oneengineonly one engine operating

OEW

operatingemptyweight

OF

overfrequency

OFV

outflowvalve

OGM

opticalgraphicmodule

OGV

outletguidevane

Page 46


ABBREVIATIONS AND ACRONYMS O OH, O/H, OVHD

overhead

OH,OVHT

overheat

OHU OK

overheadunit okay

OM

outermarker(beacon)

OMNI

omnidirectional

OMS

onboardmaintenancesystem order management system

OMS IMA

OMS interactive maintenance application

OMSA

onboard maintenance system application

OMST

onboard maintenance system table

ONS

OMEGAnavigationsystem

OOOI OPR

out-off-on-in operation

OPS

operationspersecond

OPU

oilpumpunit

ORT

owner’srequirementtable

OS

onside operating system overspeed overspeed solenoid

OSC

oscillator

OSI OSS

opensystems interconnection omegasensorsystem over station sensor

OSU

overspeedandsplitterunit

OT

othertraffic

OTS

organizedtracksystem

OUTBD

outboard

OV

outflowvalve

OVBD

overboard

OVERTEMP

overtemperature

OVHT OVLD

overheat overload

OVRD

override

OVSP, OVSPD

overspeed

OXY, O2

oxygen


Page 47

ABBREVIATIONS AND ACRONYMS O oz

ounce(s)

OZC

ozoneconverter

P P/N

partnumber

P/RST

presstoreset

P/S

pitot/static power supply

P0

ambientpressure pressure altitude

P2.5

compressor discharge pressure (sta. 2.5)

P2.8

compressor discharge pressure (sta. 2.8)

P20

total(inletair)pressure

P3

compressor discharge pressure (sta. 3)

P30

HPcompressorexitpressure

P50

LPturbineexitpressure

Pa

pascal

PA

passengeraddress power amplifier pressure altitude

PAA

passenger address amplifier

PAC

path attenuation compensation (correction)

PACIC

passenger address and communication system

PACIS

passenger address/cabin interphone system

PACK

airconditioningunit

PAG

page

PAL

programmablearraylogic

PALT

pressurealtitude

PAMB

ambient pressure

PASS SIGNS

passenger signs

PAST

person-activated self-test pilot-activated self-test

PATT

pitchattitude

PAU

passengeraddressunit portable analysis unit

PAV

pressureadjustingvalve presence and validity

Page 48


ABBREVIATIONS AND ACRONYMS P PAX, PASS

passenger(s)

PBA

pushbuttonannunciator

PBE

personal portable breathing breathingequipment equipment (smoke hood) protective breathing equipment

PBIT

power-onbuilt-intest

PBM

pressurebiasmodulation

PBSOV

parking brake shutoff valve

PBU

protectivebreathingunit

PC

printedcircuit

PCB

printedcircuitboard

PCD

pressure compressor discharge

PCDA PCE

power center and distribution assembly precoolerexchanger precooler exhaust

PCI

peripheral component interconnect

PCM

pulsecodemodulation

PCMCIA

Personal Computer Memory Card Interface Association Personal Computer Memory Card International Association

PCMM

portable coordinate measuring machine

PCU

powercontrolunit

PCWS

pitch control wheel steering

PDA PDC

prematuredescentalerting pressure discharge compressor

PDF

portabledocumentformat

PDL

portabledataloader

PDP

powerdistributionpanel

PDPS

pack discharge pressure sensor

PDR

preliminarydesignreview

PDS

pilot display system, primary display system

PDTS

pack discharge temperature sensor

PDU

pneumaticdriveunit

PECO

power drive unit pitcherectioncutoff

PEM

piloteventmarker power and environment module

PEP

peakenvelopepower


Page 49

ABBREVIATIONS AND ACRONYMS P PERF

performance

PF

pilotflying pitch feel

PFA

pitchfeelactuator

PFCS

primary flight control system

PFCU

pitchfeelcontrolunit

PFD

primaryflightdisplay

PFS

pitchfeelsimulator

PG,PGE

page

PIC

pilotincommand

PIFS

packinletflowsensor

PIPS

pack inlet pressuresensor

PIT

packinlettemperature pilot-initiated test pitch

PITCH SYNC

pitch synchronization

PITS

pack inlet temperature sensor

PLA

powerleverangle

PLC

primarylogiccard

PLD

programmablelogicdevice proportional lift dumping

PLI

pitchlimitindicator

PLL PLT(s)

phase-lockedloop pilot(s)

PM

phasemodulation protocol manager

PMA

permanentmagnet alternator part manufacturing approval

PMAT

portable maintenance access terminal

PMG

permanent magnet generator

PMOS

P-type metal oxide semiconductor

PMP

powermanagementpanel

PNF PNL

pilotnotflying panel

PNU

pneumaticsystem

POC

power-onclear power-on count

Page 50


ABBREVIATIONS AND ACRONYMS P POH

Pilot Operating Handbook (italicize with actual publication name)

POR

pointofregulation Pacific Ocean region

POS

position

POS INIT

position initialization

POST

power-onself-test

POT

potentiometer

PPBM

Power Plant Buildup Manual

pph, lb/hr

pounds per hour (or lb/hr, depending on panel)

PPI

planpositionindicator

PPM

powerproducingmodule preprogrammed message pulse position modulation

ppm, lb/min

pound per minute (or lb/min, depending on panel)

PPOS

presentposition

PQM

powerqualitymonitor

PR

powerready

PRAIM

predictive receiver autonomous integrity monitoring

PRE

preset preselect

PRESEL

preselect

PRESS

pressure, pressurization

PRI,PRIM PROC

primary procedure processor

PROG

program,programmer progress

PROM

programmable read-only memory

PROT, PROT'N

protection

PROX

proximity

PRSOV

pressure-regulating shutoff valve

PRTR

printer

PRV

pressure-regulatingvalve pressure-relief valve

PS

phasesequence pitot/static power supply pressure switch


Page 51

ABBREVIATIONS AND ACRONYMS P Ps

staticpressure

PSA

printserverapplication

PSEU psf

proximity sensor electronic unit poundspersquarefoot

psi

poundspersquareinch

psia

pounds per square inch absolute

psid

pounds per square inch differential

psig

poundspersquareinchgauge

PSM

pressuresensormodule

Psmc

P-channel used for SMC functions

PSOV

pressurizing and shutoff valve

PSR

primarysurveillanceradar

PSS

proximitysensorsystem proximity switch sensor

PSTN

public switched telephone network

PSU

passengerserviceunit power supply unit

pt

pint

PT

pressuretransducer proximate traffic total pressure total (Inlet air) pressure

PTCH

pitch

PTCT

protect

PTG

pilottrainingguide

PTO

powertakeoff

PTR

pointer

PTS

packtemperaturesensor points

PTT

press-to-talk (test, transmit) push to talk

PTU

powertransferunit

PV

priorityvalve

PVB

polyvinylbutyral

PVT

position,velocity,time

PW

pitchwheel pulse width

PWA

printedwiringassembly

Page 52


ABBREVIATIONS AND ACRONYMS P PWM

pulse-widthmodulation

PWR

power

PWS

potable/washwatersystem

Q QA

qualityassurance

QAD

quickattach-detach

QAK

quickaccesskey

QAR

quickaccessrecorder

QD

quickdisconnect

QEC

quadrantalerrorcorrector quick engine change

QFE

localstationpressure corrected baro alt relative to field elevation

QNE

ISA,barometricpressure

QNH

altimetersetting corrected baro alt relative to sea level

QRB

quickreleasebuckle

qt

quart(s)

QTY

quantity

R

right

R-C

resistor-capacitornetwork

R/D

refuel/defuel

R/T

receiver-transmitter

RA MIN

radio altitude minimums

RA,R/A

radioaltimeter radio altitude resolution advisory

RAAS

runway awareness and advisory system

RAC RAD

radioaltitudeconverter radar radial

RAD ALT

radio altimeter (or altitude)

RAI

radioaltimeterindicator


R

Page 53

ABBREVIATIONS AND ACRONYMS R RAIM

receiver autonomous integrity monitoring

RALT

radioaltimeter

RAM RARV

random-accessmemory ramair regulatingvalve

RAT

ramairtemperature ram air turbine

RAT GEN

ram air turbine generator

RATLC

RATlinecontactor

RAV

ramairvalve

RB

rudderboost

RBC

rearbearingchamber

RBL

rightbuttockline

RBT RCB

resistancebulbthermometer radiocontrolbus

RCC

RescueCoordinationCenter

RCCB

remote control circuit breaker

RCDR

recorder

RCIM

roll control input module

RCL

recall

RCP

remotecompensationpanel

RCT

rain echo attenuation compensation technique

RCU

remotecompensationunit

RCV

receive

RCVR,RX

receiver

RDA

remotedatabusaccess remote data load access

RDC

remotedataconcentrator

RDCP

refuel/defuel control panel

RDL

remotedataloader

RDMI

radio distance magnetic indicator

RDR

radar

RDU RDY

remotedisplayunit ready

REACT

rain echo attenuation compensation technique

REC

receiver recorder

Page 54


ABBREVIATIONS AND ACRONYMS R RECIRC

recirculation

RECO

rollerectioncutoff

RECOG REF(s)

recognition reference(s)

REIM

rear electronics interface module

REL

relative

RES

reservoir

REU

remoteelectronic(s)unit remote equipment unit

REV

reverse(r) reverse course (same as back course) reversion

RF

radiofrequency

RFI

radiofrequencyinterference

RFU

radiofrequencyunit

RH,R/H

righthand

RHS

right-handside

RIPS

recorder independent power supply

RIU

radiointerfaceunit

RLA

reverseleverangle

RLG

ringlasergyro

RLS

remotelightsensor

RLY RMA

relay regionalmonitoringagency remote maintenance access

RMI

radiomagneticindicator radio management indicator

RMS, rms

radio management system root mean square

RMT

remote

RMU

radiomanagementunit

RNAV

areanavigation

RNG RNGA

range rangearc

RNP

required navigation performance

ROL

roll

ROLS

remoteoillevelsensor


Page 55

ABBREVIATIONS AND ACRONYMS R ROM

read-onlymemory

ROSE

read out support equipment

ROT

rate ofturn rotation

rpm, RPM

revolutions per minute

rps

revolutionspersecond

RPT

reportingaltitude

RPU

receiverprocessorunit

RRD

RollsRoyceDeutschland

RRP

radioreversionarypanel

RS

reset/set

RSA

reportserverapplication

RSAS RSB

roll stability augmentation system radiosystembus

Rsmc

R-channel used for SMC functions

RSP

reversionselectpanel reversion switch panel

RSS

radiosensorsystem

RST

reset

RSV

reserved

RT,R/T

radiotransmit rate rate of turn receiver/transmitter

RTA

receiver-transmitter antenna rudder trim actuator required time of arrival

RTAS

radio tuning application software

RTC

requiredterrainclearance

RTCA

Radio Technical Commission for Aeronautics Radio Technical Committee on Avionics

RTD

resistance temperature detector resistive thermal device

RTE

route

RTEDATA

routedata

RTL

readytoload rudder travel limiter

Page 56


ABBREVIATIONS AND ACRONYMS R RTLA

rudder travel limiter actuator reverse throttle lever angle

RTN

return

RTO

rejectedtakeoff

RTS

radiotuningsystem

RTSA

radio tuning system application

RTU

radiotuningunit

RUD

rudder

RVDT

rotary variable differential transformer rotary variable differential transducer

RVR

runwayvisualrange

RVSM

reduced vertical separation minimum

RVSR RVT

reverser radiovoltagetransducer rotary variable transducer rotary variable transformer

RW

rightwing

RWD

rightwingdown

RWY

runway

RX

receive

RZ

returntozero

s

second

S

status

S/A

systemannunciator

S/B,SB

servicebulletin

S/D

smokedetector

S/I

switchindicator

S/L

switch/light

S/O

shutoff

SA

standby surfacealtimeter observation system address

SAC

stability augmentation computer

SACOC

surface air cooled oil cooler

SAE

Society of Automotive Engineers

S


Page 57

ABBREVIATIONS AND ACRONYMS S SAI

standbyattitudeindicator

SAL

system address label (ARINC 129)

SAM SAP

stalladvancemode serviceaccesspoints

SAR

searchandrescue

SARSAT

search and rescue satellite-aided tracking

SAS

stability augmentation system static air source

SAT

satellite static air temperature

SATCOM

satellite communications

SAV

starterairvalve

SAW SB

surfaceacousticwave servicebulletin

SBAS

satellite-based augmentation system

SBB

swiftbroadband

SBC

singleboardcomputer

SBPD

structuralbypassduct

SBW

steer-by-wire

SBY,STBY

standby

SC

single cue

SCAV

scavenge

SCD

sourcecontroldrawing specification control drawing

SCHED

schedule

SCID

software configuration index drawing

SCL

spoilercontrollever

SCPC

singlecarrier per channel single channel per carrier

SCU

satellite communications unit signal conditioning unit start control valve steering control unit

SCV

steeringcontrolvalve surge control valve

SD

securedigital

SDC

signaldataconverter

Page 58


ABBREVIATIONS AND ACRONYMS S SDD

source destination identifier (ARINC) system design description

SDF

simplified directional facility

SDI

sourcedestinationidentifier

SDRL

supplier data requirements list

SDS

statusdisplaysystem

SDU

satellitedataunit sensor display unit

SEC, sec

second, secondary

SECS

spoiler electronic control system

SECT

sector

SECU

spoiler electronic control unit

SEL

select selector

SELCAL

selective calling selective call system

SENS

sensitivity

SERV, SVCE

service

SFC

specificfuelconsumption

SFCL

slat/flapcontrollever

SFCU

slat/flapcontrolunit

SFECU

slat flap electronic control unit

SFFS SFSH

system flight fault summary slat/flap selector handle

SG

signalgenerator specific gravity symbol generator

SGC

SVSgraphiccard

shp

shafthorsepower

SI

selectiveinterrogation surveillance identifier

SIA

signalinterfaceadapter

SIC

secondincommand

SID

standardinstrumentdeparture

SIF

selective identification feature

SIG

signal

SIGMET

significant meteorology (information) (observation)


Page 59

ABBREVIATIONS AND ACRONYMS S SIM

subscriberidentitymodule

SIMP

simplex

SIMULCOM LINE SIN

simultaneous communication line sine

SITA/AVICOM

Communications data link system (Europe)

SKP

skip

SL

sea level

SLC

secondarylogiccard

SLD

super-cooledlargedroplet

SLS

side-lobesuppression

SLTO

sealeveltakeoff

SLV

slave

SMC

system management and communication

SMKG

smoking

SMPTE

Society of Motion Picture and Television Engineers

SMS

surfacemanagementsystem

SMT

servomountingtray servo mount

SNAS

satellite navigation augmentation system

SNMP

simple network management protocol

SNSR

sensor

SOL

solenoid

SOP

standard operatingprocedure

SOS

silicononsapphire

SOV

shutoffvalve

SOVS

shutoffvalves

SP

speed

SPC

secondarypowercenter stall protection computer

SPD

speed

SPDA

secondary power distribution assembly

SPDT SPEC

single-pole double-throw specification

SPI

serialperipheralinterface

SPKR

speaker

SPLR(s), SPRS

spoiler(s)

Page 60


ABBREVIATIONS AND ACRONYMS S SPLRON

spoileron

SPM, spm

stroke per minute

SPO SPOST

supporting proficiency objective system power-on self-test

SPPR

single-point pressure refueling

SPR

single-pointrefueling

SPS

stallprotectionsystem

SQ

squelch

SR

soft ride

SRC

source

SRD

software requirements document

SRM

StructuralRepairManual

SRN

shortrangenavigation

SRS

system requirement specification

SRT

satellite receiver transmitter

SRU

shopreplaceableunit

SSB

singlesideband

SSCM

spoilers and stabilizer control module

SSCU

spoiler and stabilizer control unit

SSCVR

solid-state cockpit voice recorder (prefer CVR)

SSD

solid-statedisk

SSE SSEC

staticsourceerror static source error correction

SSFDR

solid-state flight data recorder

SSM

servoswitchingmodule sign status matrix sign/status matrix (ARINC) System Schematic Manual

SSP

systemsignalprocessor

SSPC

solid-state power contactors solid-state power controller

SSR

secondary surveillance radar

SSU

subsequentsignalunit

SSV

solenoidselectorvalve steering selector valve

ST

sidetone


Page 61

ABBREVIATIONS AND ACRONYMS S STA

station status

STAEL

stationelevation

STAB

stabilization stabilizer

STAB AUG

stability augmentation

STAR

standard terminal arrival route

STAT

status

STBY

standby

STC

sensitivitytimecontrol service tie contactor Supplementary Type Certificate

STD

standard

STN

station

STO

store

STP

steep

SUA

specialuseairspace

Subs

subsequent

SUM, SUMRY

summary

SUPPL

supply

SV

servovalve

SVGA

super video graphic adapter

SVL SVM

servolinear(actuator) syntheticvisionmodule

SVO

servo

SVS

syntheticvisionsystem

SVT

syntheticvisiontechnology

SW

software

SW,SWT

switch

SW(s)

switches

SWC

stallwarningcomputer

SXTK

selectedcrosstrack

SYN, SYNC

synchronization synchronize(d) synchronous

SYS CTRL

system control

SYS,SYST

system

Page 62



T T

third tilt

T/M

torquemotor

T/O,TO

takeoff

T/R

thrustreverse(r)

T&S

turn&slipindicator

T2

faninlettemperature

T20

totalairtemperature

T2C

compressor inlet temperature

T30

HP compressor delivery temperature

TA

trafficadvisory traffic alert

TAAD

terrain awareness alerting and display terrain/obstacle awareness alerting and display

TACAN

tactical air navigation system

TAD

terrainawarenessdisplay

TAF

terminalareaforecasts

TAI

thermalanti-ice

tamb

airambienttemperature

TAS

trueairspeed

TAT

totalairtemperature

TAV TAWS

trimairvalve terrain avoidance warning system terrain awareness and warning system terrain awareness warning system

TAWSA

TAWSapplication

TB

terminalblock

TBA

to be advised

TBC

tobeconfirmed

TBD

to be determined

TBO

timebetweenoverhauls

TC TCAS

TransportCanada(DOT) traffic alert and collision avoidance system

TCF

terrainclearancefloor

TCM

TrainingControlManual

TCS

touchcontrolsteering


Page 63

ABBREVIATIONS AND ACRONYMS T TCTA

tie current transformer assembly

TCV

temperaturecontrolvalve

TD

time delay traffic display

TDC

topdeadcenter

TDM

timedivisionmultiplex

TDMA

time division multiplex access

TDR

transponder

TE

trailingedge

TEMP

temperature

TER

tertiary

TERM

terminal

TERR TET

terrain turbineentrytemperature

TFC

traffic

TFR

temporary flightrestriction

TGB

transfergearbox

TGL

temporaryguidanceleaflet

TGT

target turbine gas temperature

THC

temperature control thermostat

TIM

time

TK

trackangle turn knob

TKE

trackangleerror

TLA

throttleleverangle

TLC

TRUlinecontactor

TLMC

time limits/maintenance checks Time Limits/Maintenance Checks manual

TM

terminalmodule torque motor

TMAF

thrust mode arbitration function

TMC TMS

thrustmanagementcomputer thermalmanagementsystem

TMT

temperature

TMU

total vertical error monitoring unit

TO,T/O

Page 64

takeoff For Information Purposes Only Copyright © Bombardier Inc. GENRC-08.12-00.00-091217

ABBREVIATIONS AND ACRONYMS T TOC

takeoffconfiguration top of climb

TOD

topofdescent

TOGA

takeoff/go-around takeoff, go-around

TOL

tolerance

TOLD

takeoff/landingdata

TP

test point

TPM

TAWSprocessingmodule

TPMA

terrain processing module application

TPO

terminal proficiency objective

TPR

transponder

TPS TPSA

terrainprocessingsystem terrain processing system application

TQA

throttlequadrantassembly

TR

temporaryrevision thrust reverser

TR, T/R, TRev

thrust reverser

TRA

throttleresolverangle throttle RVDT (resolver) angle

TRB, TURB

turbulence

TRE

TCASIIdirectionalantenna

TRK TRM

track trim

TRU

transformerrectifierunit True North

TSO

technicalstandardorder

TSS

trafficsurveillancesystem

TSSA

traffic surveillance system application

TST

test

Tt

totaltemperature

TTC

TRUtransfercontactor

TTFF TTG

timetofirstfix TechnicalTrainingGuide time-to-go

TTL

transistor-transistorlogic

TTO

total inlet temperature (sta. 0)


Page 65

ABBREVIATIONS AND ACRONYMS T TTR

TCASIItransmitterreceiver

TU

tank unit

TURB TVE

turbulence totalverticalerror

TWIP

terminal weather information for pilots

TWR

turbulenceweatherradar

TX

transmit

TXFR

transfer

U U.S.

UnitedStates

U/S

unserviceable

UART

universal asynchronous receiver transmitter

UBC

utilitybuscontactor

UC

usercomment

UD

uppersidebanddata

UF

underfrequency uplink format

UHF

ultrahighfrequency

ULB

underwaterlocatingbeacon

ULD

underwaterlocatingdevice

UMT UNLKD

universalmountingtray unlocked

UNSCHD

unscheduled

UOS

unlessotherwisespecified

UPLK

uplock

USA

UnitedStatesofAmerica

USART

universal synchronous/asynchronous receiver/transmitter

USB

universalserialbus upper sideband

USG, U.S. gal

United States gallon

USIM

universal subscriber identity module

USPD

underspeed

USTB

unstabilized

UTC

universaltimecoordinated

UTIL

utility

Page 66


ABBREVIATIONS AND ACRONYMS U UV

uppersidebandvoice

V

velocity volt(s)

V-speed

velocityspeed

V

V/S,VS

verticalspeed

V1

takeoff decision speed (formerly denoted as critical engine failure speed)

V1MBE

maximum V1 for brake energy

V1MCG

minimum V1 limited by control on the ground

V2

reference airspeed

VA

takeoff safety speed maneuvering speed

VA

volt-ampere(s)

VAC

approach climb speed

VAC

voltsalternatingcurrent

VAFN

variable-areafannozzle

VAL

valid vertical alert limit

VALT

VNAValtitudehold

VALTS

VNAValtitudeselect

VALTV

VNAVFMSaltitude

VANG

verticalangle

VAPP

VREF plus wind/gust factor

VAPP, VORAPR

VOR approach

VAR

variable,variation

VASEL

vertical altitude select

VB

design speed for maximum gust intensity

VBS

verticalbeamsensor

VCLB

VNAVclimb

VCT VDC

virtual machine configuration table voltagedirectcurrent volts direct current

VCO

voicecallout

VDES

VNAVdescent

VDEV

verticaldeviation


Page 67

ABBREVIATIONS AND ACRONYMS V VDL

VHFdatalink

VDOP

vertical dilution of precision

VDP VDT

visualdescentpoint virtual machine configuration table

VEF

critical engine failure speed

VENTS

ventilated temperature sensor

VERT

vertical

VFE, VFE

maximum airspeed with flaps extended

VFG

variable frequency generator

VFLCH, VFLC

vertical flight level change

VFR

visualflightrules

VFRI

flap retraction speed

VFTO

final takeoff climb speed

VG

variablegeometry vertical gyro

VGD

variablegeometrydiffuser

VGP

VNAVglidepath

VGV

variable geometry stator vane variable geometry vanes variable guide vanes

VHF

veryhighfrequency VHF communications transceiver

VHFNAV VHS

VHFnavigation veryhighspeed

VHSIC

very high speed integrated circuit

VIAS/MACH

VNAV indicated airspeed/Mach

VIB

vibration

VIGV

variableinletguidevane

VIR

VHFnavigationreceiver

VL

virtuallink

VLE, VLE

maximum landing gear extended speed

VLF

verylowfrequency

VLO, VLO

VLF/Omega navigation receiver maximum landing gear operating speed

VLOF

liftoff speed

VLSI

very large scale integrated circuit

VLV

valve

Page 68


ABBREVIATIONS AND ACRONYMS V VM

virtualmachine virtual memory

VMC

visual meteorological conditions

VMCA

minimum control speed in air

VMCG

minimum control speed on ground

VMCL

minimum control speed during landing approach

Vmm, VMM

minimum maneuver speed

VMO, Vmo, VMO

maximum operating limit speed velocity, maximum operating

VN, VNAV

vertical navigation

VNCC

vertical navigation computer controller

VNOC

vertical navigation on course

Vol,VOL VOR

volume VHFomnidirectionalradio very high frequency omnidirectional range

VORTAC

co-located VOR and TACAN stations combined VOR and TACAN stations

VPATH

verticalpath VNAV path

VPITCH

VNAVpitch

VPLWAAS

vertical protection level for WAAS

VR

voicerecognition

V , VR

takeoff rotate reference airspeed takeoff rotation speed

R

VREF, VREF

reference velocity (landing approach speed)

VS

stalling speed

VS,V/S

verticalspeed

VS0

stalling speed in the landing configuration

VS1

stalling speed in the appropriate flap configuration

VSD

verticalsituationdisplay

VSI

verticalspeedindicator

VSPD

V-speed

VSS VSV

verticalstabilizer station variablestatorvane

VSWR

voltage standing-wave ratio

VT

target speed reference

VTA

verticaltrackalert


Page 69

ABBREVIATIONS AND ACRONYMS V VTF

vector-to-final

VTK

vertical track, vertical track distance

VVI VWPT

verticalvelocityindicator verticalwaypoint

W W

warning watt

W/C

windcomponent

W/L

waterline,winglevel

W/S

windshear,windshield

W/W

wheelwell

WA

airmassflow

WAAS

wide area augmentation system

WAI

winganti-ice

WAITS

wing anti-ice temperature sensor

WAIV

winganti-icevalve

WARN

warning

WB

widebandwidth

WBT

web-basedtraining

WD

winddirection

WF, WF WGS

weight of fuel worldgeodeticsystem

WGT

weight

WHLS

wheels

WHT

white

WIND

window

WKN

well-knownname

WKS

well-knownservice

WL,W/L

waterline wings level

WM

WiringManual windows manager

WMM

worldmagneticmodels

WOFFW

weightoffwheels

WOFW

weightoffwheel

Page 70


ABBREVIATIONS AND ACRONYMS W WOW

weightonwheels

WP

workingpaper

wps WPT

wordspersecond waypoint

WR

weatherradar

WRN

warning

WRP

wingreferencepanel wing reference plane

WRS

weatherradarsystem

WS

secondsegmentlimitedweight wheel speed windshear wing station

WSA

webserverapplication

WSHLD, W/S

windshield

WSHR

windshear

WSP

wordsequenceposition

WSU

wheelspin-up

WT

weight

WTC

windshield temperature controller

WX

weather weather radar

WX+T

weatherandturbulence

WXP

weatherradarpanel

WXPD

weather radar picture data bus

WXR

weatherradar

WYPT

waypoint

WYPT ALT

waypoint altitude

X X

crosstransfer

XBLEED

crossbleed

XCVR

transceiver

XDCR

transducer transducer current

XDUCER

transducer

XFEED

crossfeed


Page 71

ABBREVIATIONS AND ACRONYMS X XFER, XFR

transfer

XFLOW

crossflow

XFMR XMT,XMIT

transformer transmit

XMTR

transmitter

XPDR, XPNDR

transponder

XSIDE

cross-side

XTALK

crosstalk

XTK

crosstrack

XWC

crosswindcomponent

Y YD,Y/D

yawdamper

YDS

yawdampersystem

YFCU

yawfeelcontrolunit

YFIB

yawforceinterfacebox

Z Z

zulu time

ZFW

zerofuelweight

ZULU

universal coordinated time

Page 72



Units of Measure Metric Prefixes G M

giga(10tothepowerof9) mega(10tothepowerof6)

k

kilo(10tothepowerof3)

d

deci(10tothepowerof-1)

c

centi(10tothepowerof-2)

m

milli(10tothepowerof-3)

µ

micro(10tothepowerof-6)

n

nano(10tothepowerof-9)

p

pico(10tothepowerof-12)

Fluid gal or L l mlormL qt

gallon liter milliliter quart

Weight g

gram(forweightormass)

kg

kilogram

mg oz

milligram ounce

lb

pound

Distance/Length cm

centimeter

ft

foot

in.

inch

km

kilometer

m

meter

mi

mile

mm

millimeter

yd

yard


Page 73

ABBREVIATIONS AND ACRONYMS Units of Measure (Cont) Volume cm3, CC

cubic centimeter

3

ft 3o rcu.ft in o r cu.in.

cubicfoot cubic inch

mm3

cubic millimeter

m

3

cubic meter

Electrical A

ampere

F

farad

kV

kilovolt

kVA

kilovolt-ampere

kW

kilowatt

mF

millifarad

mV

millivolt

mV

multivolt

M

megohm

pF

picofarad

V

volt

VA

volt-ampere



ohm

W µF

watt microfarad

Frequency Hz

hertz

kHz

kilohertz

MHz

megahertz

Torque kgfm

kilogramforcemeter

Nm or N·m

Newton meter

lb-ft lbfft

Page 74

pound-foot pound-forcefoot


ABBREVIATIONS AND ACRONYMS Units of Measure (Cont) Energy/Work gf

gram-force

J kgf

Joule kilogram-force

Pressure kPa

kilopascal

Pa

pascal

psi

poundspersquareinch

Temperature °C

degreesCelsius(notCentigrade)

°F

degreesFahrenheit

K

Kelvin

Speed km/h

kilometerperhour

kt

knot

m/sec

meterspersecond

mph

milesperhour

Time d

day

mo

month

y

year

sorsec min h or hr

second minute hour

Miscellaneous G

gravitationalforce

1VS

1st-stagevariablestator



Delta

P

(DeltaP)differentialpressure


Page 75


Technical Reports and Memorandums (RXX = REPORTS, MXX = MEMORANDUM) RAA RAC

Aerodynamics and Performance Report Controls, Mechanical, Hydraulics, Pneumatics & Cargo Systems

RAD

AircraftTypeSpecification

RAE

Electrical/Avionics

RAF

Finish

RAG

Aircraft Flight and Ground Test

RAH

Heating, Ventilating, Air Conditioning, De-Icing, Anti-Icing & Pressurization

RAI

Instrumentation

RAJ

Experimental Laboratory Test

RAK RAL

AdministrationReports Engineering Configuration Statement

RAM

Materials&Processes

RAN

Master Lines and Dimensions and Lofting

RAO

Design Philosophy and Certification Coordination

RAP

PowerPlant

RAQ

Equipment, Furnishings and Oxygen Systems

RAR

Radio,Radar andElectronics

RAS

StressandStructures

RAT

StructuralTest

RAU

Dynamics

RAV

Airframe

RAW

WeightandBalance

RAY

Thermodynamics

RAZ

Miscellaneous

RBC

AutomaticComputing

RBD

Product Support, Engineering Cognizance

RBQ

QualificationReports

RBR

Reliability, Maintainability, Safety, Value Analysis

RBS RBT

SystemsEngineering TechnologyDevelopment

RBU

GroundSupportEquipment

RCM

CompositeMaterials

RFT

FunctionalTest

Page 76


ABBREVIATIONS AND ACRONYMS Technical Reports and Memorandums (Cont) RIA

Classification of Accident/Accident

RPC

ProjectPlanning&Control

RQK

QualityReports


Page 77


Page intentionally left blank

Page 78


Bombardier Abbreviations and Acronyms (Aviation)

Recommend Documents