| EAA |
Experimental Aircraft Association |
| EADI |
Electronic attitude display indicator |
| EAS |
Equivalent airspeed |
| EASA |
European Aviation Safety Agency |
| EAT |
Expected approach time |
| EC |
Electronic combat; also:
Escadre de Chasse; French fighter wing |
| ECAM |
Electronic centralised aircraft monitor |
| ECCM |
Electronic counter-countermeasures |
| ECM |
Electronic countermeasures |
| ECS |
Electronic combat squadron (USAF);
also: environmental control system |
| ECU |
Electronic control unit; also:
environmental control unit |
| EDU |
Engine diagnostics unit; also:
electronic display unit |
| EEZ |
Exclusive economic zone; also:
economic exclusion zone |
| EFCS |
Electronic flight control system |
| EFIS |
Electronic flight instrumentation system |
| EGT |
Exhaust gas temperature; sometimes referred to
as JPT |
| EHF |
Extremely high frequency |
| ehp |
Equivalent horsepower |
| EHSI |
Electronic horizontal situation indicator |
| EICAS |
Engine indication/instrumentation and crew
alerting system |
| EICMS |
Engine in-flight monitoring system |
| EIS |
Electronic instrument system |
| ekW |
Equivalent Kilowatt |
| EL |
Emitter locator |
| elevator |
Moveable surface which controls pitch of
aircraft |
| elevon |
Control surface on wing trailing edge which
combines functions of aileron and |
| |
elevator; usually found on delta-winged aircraft |
| ELF |
Extremely low frequency |
| elint |
Electronic intelligence |
| ELS |
Emitter locator system |
| ELT |
Emergency locator transmitter |
| EM |
Electromagnetic |
| EMC |
Electromagnetic compatability |
| EMD |
Engineering and manufacturing development |
| EMI |
Electromagnetic interference |
| EMP |
Electromagnetic pulse |
| EMS |
Emergency medical service |
| envelope |
Outer covering of airship or balloon, encloses
hot air or the gas |
| EO |
Electro-optical |
| EOBT |
Estimated off-block time |
| EPNdB |
Equivalent perceived noise decibel |
| EPR |
Engine pressure ratio |
| EPU |
Emergency power unit (not for propulsion; on
board of aircraft) |
| ER |
Extended range |
| EROPS |
Extended range operations |
| ERU |
Ejector release unit |
| eshp |
Equivalent shaft horsepower |
| ESM |
Electronic support measures;
also:
electronic signal monitoring |
| Esmo |
ESM operator |
| ESSS |
External stores support sytem |
| ETA |
Estimated time of arrival |
| ETD |
Estimated time of departure |
| ETE |
Estimated time en route |
| ETOPS |
Extended range twin operations |
| ETPS |
Empire Test Pilot's School (UK) |
| EUCLID |
European co-operation for the long-term in
defence |
| EW |
Electronic warfare; also:
early warning |
| EWO |
Electronic warfare officer |
| EWSM |
Electronic warning support system |
| externally blown flap |
A flap over which engine bleed air is blown to
prevent airflow seperation |