Glossary
Navigating the complex world of aerospace can be daunting, especially when it comes to deciphering the industry's extensive list of abbreviations and technical terms. But fear not, we've compiled a comprehensive guide to help you make sense of it all.
From A to Z, this list of aerospace abbreviations and terms is your one-stop-shop for understanding the lingo used in this dynamic field. Whether you're an industry professional, a student, or simply curious about the aerospace industry, this resource will equip you with the knowledge you need to communicate effectively and stay ahead of the curve.
Explore this alphabetized guide and unlock the secrets of the aerospace world. With clear explanations and real-world examples, you'll be speaking the language of the skies in no time. Bookmark this page and refer to it whenever you encounter an unfamiliar acronym or technical jargon – your aerospace journey just got a whole lot smoother.
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| EAA | Experimental Aircraft Association |
| EADI | Electronic attitude display indicator |
| EAS | Equivalent airspeed |
| EASA | European Aviation Safety Agency |
| EAT | Expected approach time |
| EBF | re:externally blown flap |
| 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 |