| Abbreviation | Definition |
|---|---|
| ASTAC | Aviation Services Training And Consultancy |
| ASTB | Aviation Selection Test Battery |
| ASTM | American Society Of Testing Materials |
| ASTP | Aircraft Structures Training Program |
| ASTT | Aviation Safety Training Team |
| ASU | Aviation Specialties Unlimited |
| ASWAC | Airborne Surveillance Warning and Control |
| ASWG | Air Safety Work Group |
| ATA | Actual Time of Arrival |
| ATA | Airport To Airport |
| ATAAC | Air-To-Air After Cooler |
| ATAB | Air Travel Advisory Bureau |
| ATAE | Aviation Training for Aviation Engineers |
| ATB | Automated Ticketing and Boarding |
| ATC | A Type Certificate |
| ATC | Air Tanzania Corporation |
| ATC | Air Traffic Control |
| ATC | Aircraft Task Cards |
| ATCN | Aviation Training Center Norway |
| ATCO | Air Taxi / Commercial Operator |