| Abbreviation | Definition |
|---|---|
| ETKT | Electronic Ticket |
| ETOPS | Economics Took Over Passenger Safety |
| ETOPS | Extended Twin Engine Operations |
| ETOPS | Extended Twin-engine OPerationS |
| ETPS | Empire Test Pilots' School |
| ETSCAT | Efficient Tri Service Combat Aircraft Technology |
| EU | Electronic Unit |
| EVLOS | Extended Visual Line Of Sight |
| EVS | Enhanced Vision Systems |
| EXJAM | Ex junior aircraft men |
| EXPL | Explode |
| EXPL | Explosive |
| EY | Etihad Airways |
| EZAP | Enhanced Zonal Analysis Procedure |
| EZY | Easyjet |
| F/A | Free Astray |
| F/D | Flight Deck |
| F/D | Flight Director |
| F/O | First Officer |
| F/WHOURS | Fixed-Wing Hours |