1A............2B............13C............16D............24E............31F............37G............42H............45I............48J............53K............54L...........54M...........58N...........65O...........69P...........72Q...........80R...........80S...........86T...........96U...........104V...........105W..........109X...........111Y...........112Z...........112*Avionics-ese.SometimescalledAv-speak.It’saconfusing,sometimesfrustratinglanguage.That’swhyyourfriendsatRockwellCollinscreatedthishandycompendiumofacronyms,termsanddefinitions.Wehopeithelps.Copyright©2001RockwellCollins,Inc.www.rockwellcollins.comCONTENTSOFGLOSSARYAVIONICSGLOSSARYHowtoSpeakAvionics-ese*3AcclrmAccelerometerACCTSAviationCoordinatingCommitteeforTelecommunicationsServicesACE(1)Thecontrolcharactermeaningtechnicalacknowledge(2)ActuatorControlElectronics(3)AdvancedCertificationEquipmentACFAreaControlFacilityACIDAircraftIdentificationACIPSAirfoilandCowlIceProtectionSystemACKThecontrolcharactermeaningtechnicalacknowledgementofanuplink,usedinanACARSsystemACMPAlternatingCurrentMotorPumpACMSAircraftConditionMonitoringSystemACPAudioControlPanelACS(1)ActiveControlSystem(2)AudioControlSystemACSGAeronauticalCommunicationsSub-GroupACTActiveACU(1)ApronControlUnit(2)AntennaControlUnit(3)AutopilotControlUnitA/DAnalog-To-DigitalADAdministrativeDomainADAComputerProgrammingLanguageADASAutomatedWeatherObservingSystemDataAcquisitionSystemADCAirDataComputerADFAutomaticDirectionFinderADIAttitudeDirectorIndicator3-D,4-DThreeorfourdimension4096CodeTheoctalbase,four-digitcodeusedbetweenframingpulsesofareplytoidentifytheaircraftorforgeneraluseandemergencycodes(XPD)10BaseT10MbpsbasebanddatatransmissionovertwistedcopperwireA(1)AutotunedNAVAID(2)AmperesAACAeronauticalAdministrativeCommunicationsAADAssignedAltitudeDeviationAAIAirlineAvionicsInstituteAALAboveAerodomeLevelAAMPAdvancedArchitectureMicro-ProcessorAATSAviationandAirTrafficServicesAATTAdvancedAviationTransportationTechnologyA/BAutobrakeABEARINC429BusEmulatorABMAsynchronousBalancedModeA-BPSK(1)AeronauticalBinaryPhaseShiftKeying(2)AviationBinaryPhaseShiftKeyingABRVAbbreviationABSAbsoluteAC(1)AdvisoryCircular(2)AlternatingCurrentA/CAircraftACAAddressCompressionAlgorithmACACAir-CooledAirCoolerACASAirborneCollisionAvoidanceSystemACARSAircraftCommunicationsAddressingandReportingSystemACC(1)ActiveClearanceControl(2)AreaControlCenter25AFAirwayFacilitiesAFC(1)AutomaticFrequencyCompensation(2)AutomaticFrequencyControlAFCASAutomaticFlightControlAugmentationSystemAFCSAutomaticFlightControlSystemAFD(1)AdaptiveFlightDisplay(2)AdvancedFlightDeck(3)AutopilotFlightDirectorAFDCAutopilotFlightDirectorComputerAFDSAutopilotFlightDirectorSystemAFEPSACARSFrontEndProcessingSystemAFIAuthorityFormatIdentifierAFIS(1)AirborneFlightInformationSystem(2)AutomaticFlightInformationServiceAFMAircraftFlightManualAFNATSFacilitiesNotificationAFS(1)AeronauticalFixedService(2)AirborneFileServer(3)AutomaticFlightSystemAFSSAutomaticFlightServiceStationAFSKAudioFrequencyShiftKeyingAFTNAeronauticalFixedTelecommunicationsAFTRCCAerospaceandFlightTextRadioCoordinatingCouncilA/GAir/GroundAGACSAutomaticGround-AirCommunicationSystem.ItisalsoknownasATCSSorDATALINK.AGATEAdvancedGeneralAviationTransportExperimentAGCAutomaticGainControl.AGCisusedtomaintaintheoutputlevelofthereceiver.AGISAirGroundIntermediateSystemADIRSAirDataInertialReferenceSystemADIRUAirDataInertialReferenceUnitADLAeronauticalDataLinkADLP(1)AirborneDataLinkProtocol(2)AircraftDataLinkProcessorADLSAeronauticalDataLinkServicesADMAirDataModuleADMSAirlineDataManagementSystemADPAirDataProcessorADRASAirplaneDataRecoveryandAnalysisSystemADS(1)AirDataSystem(2)AutomaticDependentSurveillanceADS-AAutomaticDependentSurveillance–AddressADS-BAutomaticDependentSurveillance–BroadcastADSELAddressSelective.ASSRsystemelectronicallyarrangedtoaddresseachtransponderselectively.Onlyaparticulartransponderwillrespond,thusavoidinggarbling.ADSELusesamonopulsetechniquetoprovidemoreaccuratebearingmeasurement.ADSELiscompatiblewithDABS.(RefertoModeStransponders.)ADSPAutomaticDependentSurveillancePanelADSU(1)AutomaticDependentSurveillanceSystem(2)AutomaticDependentSurveillanceUnitADTNAdministrativeDataTransmissionNetworkAECUAudioElectronicControlUnitAEECAirlinesElectronicEngineeringCommitteeAEP(1)AudioEntertainmentPlayer(2)AutopilotEngagePanelAERAAutomatedEnRoutetrafficcontrolAESAircraftEarthStationAEUAuxiliaryEquipmentUnit47AITAdvancedIntelligenceTape-usedforthestorageofdigitalvideoandaudiofilesAIVAccumulatorIsolationValveAIXAdvancedInteractiveExecutiveAJPSAFEPSJournalProcessingSystemA/LAutolandALCAutomaticLevelControl.Acircuitusedtomaintaintheoutputofatransmitterregardlessofvariationsintheattenuationofthesystem.ALEAutomaticLinkEstablishmentALIAltimeterALPAAirlinePilotsAssociationALSApplicationLayerStructureALSIPClearALT(1)AirborneLinkTerminal(2)Alternate(3)Altimeter(4)AltitudeALTHOLDAltitudeHoldModeAltitudeHeightdeterminedbybarometricpressureAltitudeAcontinuousreturnacrossthedisplayatarangeRingequivalentto