AEROSPACE ACRONYM & Abbreviation Guide

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December 2010

Avionics Magazine proudly presents the fifth edition of our biennial Aerospace Acronym & Abbreviation Guide. Updated with the latest terms from the magazine’s pages, this comprehensive guide has grown to more than 3,000 civil and military acronyms.

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

  • E-PIREPS electronic pilot reports

  • E/D end-of-descent

  • E/O engine-out

  • EA enterprise architecture

  • EA environmental assessment

  • EAA Experimental Aircraft Association

  • EACARS enhanced ACARS

  • EAD engine alert display

  • EAD European AIS database (Eurocontrol)

  • EADI electronic attitude director indicator

  • EADS European Aeronautic Defence and Space Co.

  • EAFR enhanced airborne flight recorder

  • EAI engine anti-ice

  • EAL evaluation assurance level

  • EAL-7 evaluation assurance level-7

  • EANPG European Air Navigation Planning Group

  • EAP engine alert processor

  • EAROM electrically alterable read-only memory

  • EARTS en route automated radar tracking system

  • EAS equivalent airspeed

  • EASA European Aviation Safety Agency

  • EASIE enhanced ATM and Mode S implementation in Europe

  • EATCHIP European air traffic control har­monization & integration program

  • EATMS European ATM System (Eurocontrol)

  • EATRADA European ATM Research and Development Association

  • EBR extended bit rate

  • EC European Commission

  • ECAC European Civil Aviation Conference

  • ECAM electronic caution alert module

  • ECC error correcting code

  • ECEF earth-centered, earth-fixed

  • ECJ European Court of Justice

  • ECL emitter coupler logic

  • eCM equipment conditioning monitoring

  • ECMP electronic component manage­ment system

  • ECN engineering change notice

  • ECO engineering change order

  • ECP EICAS control panel

  • ECP engineering change proposal

  • ECS engineering compiler system

  • ECS environmental control system

  • ECS event criterion subfield

  • ECSL left environmental control system card

  • ECSMC environmental control system miscellaneous card

  • ECSR right environmental control system card

  • ECU electronic control unit

  • ED EICAS display

  • EDA electronic design automation

  • EDAC error detection and correction

  • EDARC enhanced direct access radar channel

  • EDC error detection and correction

  • EDDS electronic document distribution service

  • EDI electronic data interchange

  • EDI engine data interface

  • EDIF engine data interface function

  • EDIS emergency digital information service

  • EDIU engine data interface unit

  • EDMS electronic data management system

  • EDP electronic data processing

  • EDP engineering development pallet

  • EDP engine driven pump

  • EDS embedded diagnostic system

  • EDS explosive detection system

  • EDU electronic display unit

  • EE electrical engineer

  • EE electronics equipment

  • EEAS enhanced en-route automation system

  • EEC electronic engine control

  • EEC Eurocontrol Experimental Center

  • EEPROM electrical erasable programmable ROM

  • EEU electrical load management system electronics unit

  • EFB electronic flight bag

  • EFC expected further clearance

  • EFD electronic flight display

  • EFDP European flight data processing (Eurocontrol)

  • EFIC electronic flight instrument controller

  • EFIP electronic flight instrument processor

  • EFIS electronic flight instrument system

  • EFIS CP EFIS control panel

  • EFVS enhanced flight vision system

  • EGI embedded GPS/INS

  • EGIHO expedited ground-initiated handoff

  • EGNOS European Geostationary Overlay System

  • EGP exterior gateway protocol

  • EGPWS enhanced ground proximity warning system

  • EGT exhaust gas temperature

  • EHF extremely high frequency

  • EHSI electronic horizontal situation indicator

  • EHV electro-hydraulic valve

  • EIA Electrical Institute of America

  • EIA Electronic Industries Association

  • EICAS engine indication and crew alert system

  • EICASC EICAS controls

  • EIPI extended initial protocol identifier

  • EIRP earth incident radiated power

  • EIRP effective isotropic radiation power

  • EIS electronic instrument system

  • EIS engine indication system

  • EIS environmental impact statement

  • EISA extended industry standard architecture

  • EIU electronic interface unit

  • ELB electronic logbook

  • ELEC electrical

  • ELM extended length message

  • ELMS electrical load management system

  • eLORAN enhanced long range aid to navigation

  • ELOS equivalent level of safety (U.S. Army)

  • ELS electronic library system

  • ELT emergency locator transmitter

  • EM electromagnetic

  • EM element manager

  • EMATS endurance management air traffic system

  • EMC electromagnetic compatibility

  • EMC entertainment multiplexer controller

  • EMD engineering, manufacturing and development

  • EMER emergency

  • EMI electromagnetic interference

  • EMP electro magnetic pulse

  • EMS emergency medical services

  • EMS engine management system

  • EMS environmental management system

  • EMU expansion module unit

  • ENG engine

  • ENOC engineering network operations center

  • EO/IR electro-optic/infrared

  • EOC emergency operations center (U.S. Army)

  • EOD end of day

  • EO DAS electro-optical distributed aper­ture system

  • EOLA European pre-operational data link applications

  • EOM end of message

  • EOT end of text

  • EOTS electro-optical targeting system

  • EP engineering project

  • EP external power

  • EPC engineering project contractor

  • EPCS engine propulsion control system

  • EPLD electronically programmable logic device

  • EPLRS enhanced position location and reporting system

  • EPR engine pressure ratio

  • EPR environmental protection requirements (Europe)

  • EPROM erasable programmable ROM

  • EPS electrical power system

  • EPU estimated position uncertainty

  • EPV end-point voltage

  • EQTG electronic qualification test guide

  • ERA Environmentally Responsible Aviation program (AIA)

  • ERAM En Route Automation Moderniza­tion

  • ERAST environment research aircraft and sensor technology

  • ERB Engineering Review Board

  • ERD end routing domain

  • ERMP extended range multi purpose

  • EROPS extended range operations

  • ERP effective radiation power

  • ERP eye reference point

  • ERPDU error protocol data unit

  • ERP PDU echo replay protocol data unit

  • ERQ PDU echo request protocol data unit

  • ERU engine replay unit

  • ES end system

  • ES extended squitter

  • ESA European Space Agency

  • ESAI electronic standby attitude indicator

  • ESAS electronic situation awareness system

  • ESAS enhanced situational awareness system

  • ESD electrostatic discharge

  • ESDS electrostatic discharge and soldering

  • ESH end system hello

  • ESID engine and system indication display

  • ESIS electronic standby instrument system

  • ESIS engine and system indication system

  • ESM electronic support measures

  • ESOIC enhanced small-outline IC

  • ESR equivalent-series resistance

  • ESS electronic switching system

  • ESS environmental stress screening

  • ESSD electrostatic sensitive devices

  • ESU environmental sensor unit

  • ETA estimated time of arrival

  • ETAS enhanced TRACON/tower auto­mation system

  • ETB end of block (ASCII/IA5 character)

  • ETB engineering test bed

  • ETC estimated time of completion

  • ETD estimated time of departure

  • ETE estimated time enroute

  • ETI elapsed time indicator

  • ETM elapsed time measurement

  • ETM electronic training manuals

  • ETMS engine-trend monitoring services

  • ETMS enhanced traffic management system

  • ETNO European Telecommunications Network Operators

  • ETOPS extended operations

  • ETOPS extended twin-engine operations

  • ETP equal time point (halfway there, by time)

  • ETRC expected taxi ramp clearances

  • ETS Emission Trading Scheme

  • ETVS enhanced terminal voice switch

  • ETX end of transmission

  • EU electronic unit

  • EU European Union

  • EUAFS enhanced upper air forecast system

  • EUPS external uninterruptible power supply

  • EURATN European ATN

  • EURET European research on transport systems

  • EUROCAE European Organization for Civil Aviation Equipment (European equivalent of RTCA)

  • EUROCONTROL European Organization for the Safety of Air Navigation

  • EV earned value

  • EVM error vector magnitude

  • EVS enhanced vision system

  • EW electronic warfare

  • EWIS electrical wiring interconnection system

  • EZAP enhanced zonal analysis procedures