Acronyms: E

Acronym	Name
EFIS	Electronic Flight Information Systems
EFIS	Electronic flight instrument system
EFSTS	Electronic Flight Strip Transfer System
EFV	Enhanced Flight Visibility
EFVS	Enhanced Flight Vision System
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
EIAF	Expanded Inward Access Features
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
ELD	Electrical Load Database
ELEC	Electrical
ELM	Extended length message
ELMS	Electrical load management system
ELOS	Equivalent level of safety (U.S. Army)
ELS	Electronic library system
ELT	Emergency Locator Transmitter
ELT	Emergency locator transmitter
ELWRT	Electrowriter
EM	Electromagnetic
EM	Element manager
EMAS	Engineered Materials Arresting System
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
EMPS	En Route Maintenance Processor System
EMS	Emergency medical services
EMS	Engine management system
EMS	Environmental management system
EMU	Expansion module unit
ENAV	En Route Navigational Aids
ENG	Engine
ENOC	Engineering network operations center
EO DAS	Electro-optical distributed aperture system
EO/IR	Electro-optic/infrared
EOC	Emergency operations center (U.S. Army)
EOD	End of day
EOF	Emergency Operating Facility
EOLA	European pre-operational data link applications
EOM	End of message
EON	Emergency Operations Network
EOSH	Environmental Compliance Occupational Safety and Health
EOSH	Environmental and Occupational Safety & Health
EOT	End of text
EOTS	Electro-optical targeting system
EP	Engineering project
EP	External power
EPA	Environmental Protection Agency
EPC	Engineering project contractor
EPCS	Engine propulsion control system
EPE	Estimate of Position Error
EPI	Element Performance Inspection
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
EPS	Engineered Performance Standards
EPSS	Enhanced Packet Switched Service
EPU	Estimated position uncertainty
EPV	End-point voltage
EQTG	Electronic qualification test guide
ERA	Environmentally Responsible Aviation program (AIA)
ERAD	En Route Broadband Radar
ERAM	En Route Automation Modernization
ERAM	En Route Automation Modernization
ERAST	Environment research aircraft and sensor technology
ERB	Engineering Review Board
ERD	End routing domain
ERIDS	En Route Information Display System
ERIT	Enhanced Radar Intelligent Tool
ERM	En Route Spacing Program
ERMP	Extended range multi purpose
ERMS	Environmental Remote Monitoring System
EROPS	Extended range operations
ERP	Effective radiation power

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Acronyms: E