AC 43.13-1B

Appendix 2

2 DCDRdecoder DDBdigital data bus DEMODdemodulator DEMUXdemultiplexer DFDRdigital flight data recorder DGdirectional gyro DGTLdigital DHdecision height DISC SOLdisconnect solenoid DISCdisconnect DISTRdistribution DMAdirect memory access DMBdead main bus DMCdisplay management computer DMEdistance-measuring equipment DMEAdistance-measuring equipment antenna DNdown DUdisplay unit E/Eor E & E electrical/electronic E1-1first shelf, number 1 equipment rack E2-2second shelf, number 2 equipment rack EADFelectronic automatic direction finder EADIelectronic attitude-director indicator EAROMelectrically alterable read-only memory ECEICAS computer ECAMelectronic centralized aircraft monitoring EDSPEICAS display select panel EDUEICAS display unit EECelectronic engine control EFIelectronic flight instrument EFISelectronic flight instrument system EFISCPEFIS control panel EFISCUEFIS comparator unit EFISG EFISsymbol generator EFISRLS EFISremote light sensor EHSIelectronic horizontal-situation indicator EHSIDelectronic horizontal-situation indicator display EHSVelectrohydraulic servo value EICASengine indicating and crew alerting system ELCUelectrical load control unit ELECelectric; electronic ELECTelectrical ELEXelectronics; electrical ELTEmergency Locator Transmitter EMER GENemergency generator emfelectromotive force EMFIelectromechanical flight instrument EMIElectromagnetic interference EP AVAILexternal power available EPexternal power EPCexternal power contactor EPCSelectronic power control switch EPROMerasable programmable read-only memory eV—electron volt EXCTRexciter EXT PWRexternal power FAAFederal Aviation Administration FAA-PMAFederal Aviation Administration Parts Manufacturer Approval FMfrequency modulation FM/CWfrequency modulation continuous wave FMCflight management computer FMCDflight management computer control display unit FMCSflight management computer system FMSflight management system FODforeign object damage FREQfrequency FSEUflap/slat electronic unit FW or FWDforward G/Sglide slope GAL or GALYgalley GCRgenerator control relay auxiliary contact GCUgenerator control unit GEBgenerator circuit breaker GENgenerator GLRgalley load relay GMAWgas metal arc welding GMTGreenwich mean time; cordinated Universal time GND PWRground power GND RETground return GND SVCEground service GND or GRDground GPCUground power control unit GPSglobal positioning system GPSWgear opposition switch GPUground power unit GPWground proximity warning GPWSground proximity warning system GSRground service relay GSSRground service select relay GSTRground service transfer relay GTAWgas tungsten arc welding GWPCground proximity warning computer H/Lhigh/low HEAhigh-frequency radio antenna HF (hf) high frequency (3 to 30 MHz) HFCPhigh-frequency radio control panel HI Zhigh impedance HZhertz

Appendix 2

3 I.D.inner diameter I/Oinput/output IAPSintegrated avionics processor system IASindicated airspeed IDGintegrated drive generator IFintermediate frequency IFRinstrument flight rules IGNignition IISintegrated instrument system ILSinstrument landing system INDLindicator light INSTinstrument INSTRinstrument INTCONinterconnect INTECinterface INTERinterrogation INTPHinterphone INVinverter IR ILSreceiver kHzkilohertz KSIthousands of pounds per square inch kVkilovolts kVAkilovoltamperes kVARkilovoltampere reactive L-Bandradio frequency band (390 to 1550 MHz) LCDliquid-crystal display LDload LEDlight-emitting diode LF (lf) low frequency (30 to 300 kHz) LO Zlow impedance LOClocalizer LRUline replaceable unit LSloudspeaker LSBlower sideband LSPTMlimit switch position transmitter module LTlight LTS lights MACmean aerodynamic chord MAN/ELECmanual/electric MBAmarker-beacon antenna MCDPmaintenance control and display panel MCDUmultipurpose control and display unit MDEmodern digital electronics MECmain equipment center; main engine control MEG or MEGAmillion MEKmethylethylketone MEMmemory METOMaximum except-take off MF(mf) medium frequency (300 kHz to 3 MHz) MHzmegahertz MICmicrophone MICRO-Pmicroprocessor MIGmetal inert gas MILLIone one-thousandth (0.001) MKR BCNmarker beacon MSmilitary standard MSDSMaterial Safety Data Sheets MSEC(ms) milliseconds MSGmessage MTBFmean time-between-failure MUXmultiplexer mVmillivolts NASNational Aerospace Standard NAVnavigation NCnormally closed; not connected;

no connection NDBnondirectional beacon NDINondestructive Inspection NEGnegative NSEC (ns) nanoseconds NTSBNational Transportation Safety Board NVMnonvolatile memory OAMoriginal aircraft manufacturer OBSomni bearing selection OCovercurrent OEMoriginal equipment manufacturer OFover-frequency OVV or OVovervoltage OVVCO or OVCOovervoltage cutout P-Sparallel to series PApassenger address; power amplifier PARA/SERparallel to serial PCUpassenger control unit; power control unit PFDpermanent-magnet generator PMAParts Manufacturer Approval POSpositive POTpotentiometer; plan of test PRpower relay PRLparallel PROMprogrammable read-only memory PROXproximity PSEUproximity switch electronic unit PSIpounds per square inch PWRpower PWR SPLYpower supply QPLQualified Products List QTYquantity r-treceiver-transmitter RAradio altimeter; radio altitude RADradio RAIND radio altimeter indicator RAMrandom-access memory RARTradio altimeter receiver-transmitter

Appendix 2

4 RATram air turbine RCCBremote-control circuit breaker RCLrecall RCVRreceiver RCVR/XMTRreceiver/transmitter RDMIradio distance magnetic indicator RF (rf) radio frequency RFIradio-frequency interference RLSremote light sensor RMIradio magnetic indicator rpmrevolution per minute RTVroom temperature vulcanizing SAESociety of Automotive Engineers SATstatic air temperature SATCOMsatellite communication SCRsilicon-controlled rectifier SDIsource destination identifier SELCALselective calling system SER DLserial data link SGsymbol generator SITASociété International de Telecommunications Aeronautiques SMAWshielded metal arc welding SMDsurface mounted device SNRsignal-to-noise ratio SOLsolenoid SOLVsolenoid valve SOMstart of message SOTstart of transmission SPKRspeaker SPRsoftware problem report SQLsquelch SSBsingle sideband SSIDSupplemental Structural Inspection Documents SSMsign status matrix STsynchro transmitter STAT INVstatic inverter STBYstandby STCSupplemental Type Certificate SWswitch SYM GENsymbol generator T-Rtransformer-rectifier TATtrue air temperature TBDPtie bus differential protection TCType Certificate TCAStraffic alert and collision avoidance system TCDSType Certificate Data Sheets TDCtop dead center TFRtransfer TIGtungsten inert gas TMCthrust management computer TMSterminal marking sleeve TMSthrust management system TMSPthrust mode select panel TRUtransformer-rectifier unit TSOTechnical Standard Order TXPDRtransponder µmicro UBRutility bus relay UFunderfrequency UHFultrahigh frequency (300 MHz to 3 GHz) UNDFunderfrequency UNDVundervoltage USunderspeed USB (us)upper sideband USECmicroseconds UVundervoltage UVutraviolet V ac, Vac, or VACvolts alternating current V dc, Vdc, or VDC volts direct current Vvolts; voltage; vertical; valve VAvolt-amperes VARvolt-ampere reactive VFRvisual flight rules VHF (vhf) very high frequency (30 TO 300 MHz) VLSIvery large-scale integration VORVHF omnirange; visual omnirange VORTACVOR tactical air navigation VRvoltage regulator VRMSvolts root means square Wwatts WARNwarning WCPweather radar control panel WEAweather WEUwarning electronics unit power supply WPTwaypoint WX (WXR)weather radar XCVRtransceiver XDCRtransducer XFMRtransformer XFRtransfer XMITtransmit XMTRtransmitter XPDRtransponder

Appendix 3

APPENDIX 3. METRIC-BASED PREFIXES AND POWERS OF 10

Atto (a) = quintillionth of = 10 -18 times Femto (f) = quadrillionth of = 10 -15 times Pico (p), or µµ = trillionth of = 10 -12 times Nano (n), or mµ = billionth of = 10 -9 times Micro (µ) = millionth of = 10 -6 times Milli (m) = thousandth of = 10 -3 times` Centi (c) = hundredth of = 10 -2 times Deci (d) = tenth of = 10 -1 times unity = 10 0 = 1 Deka (da) = ten times = 10 times Hecto (h) = hundred times = 10 2 times Kilo (k) = thousand times = 10 3 times Mega (M) = million times = 10 6 times Giga (G), or kM = billion times = 10 9 times Tera (T) = trillion times = 10 12 times

Appendix 3