| Abbreviation | Definition |
|---|---|
| AATD | Advanced Aviation Training Devices |
| AATO | African Aviation Training Organizations |
| AATS | Aircrew Aircraft Tasking System |
| AATT | Aerospace Auditor Transition Training |
| AATT | Airports Authority of Trinidad and Tobago |
| AAWACU | Air-to-Air Warfare Aircraft Control Unit |
| AAWG | Aviation and Aerospace Working Group |
| AAY | Allegiant Air |
| ABCU | Automatic Boost Control Unit |
| ABDU | Aviation Battle Dress Uniform |
| ABEA | Al Bateen Executive Airport |
| ABH | Aviation Broom Handler |
| ABJ | Aviation Business Journal |
| ABMA | Aviation Boatswains Mate Association |
| ABO | Aviators Breathing Oxygen |
| ABS | Australian Bonanza Society |
| ABS | Aviation Business System |
| ABSG | Aviation Business Strategies Group |
| ABSO | Aviation Branch Safety Office |
| ABV | Above |