Aerospace Acronym and Abbreviation Guide

The Avionics Aerospace Acronym and Abbreviation Guide

December 2010

Avionics proudly presents the fifth edition of our biennial Aerospace Acronym and 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