| Abbreviation | Definition |
|---|---|
| ADT | Average Daily Trips |
| ADTN | Administrative Data Transmission Network |
| ADTP | Automotive Devices Test Platform |
| ADTS | Advanced Driver Training Services |
| ADVANCE | Advanced Driver And Vehicle Advisory Navigation Concept |
| ADW | After Dump Weight |
| AEDT | Articulated Electric Drive Trailer |
| AEG | Aircraft Evaluation Group |
| AEJ | AEroJet |
| AEK | Aircraft Ejection Kit |
| AEL | Airport Express Line |
| AEMS | Aircraft Engine Management System |
| AEOT | All Engine Out Taxi |
| AEPP | Airport Emergency Preparedness Program |
| AEPS | Advanced Electric Propulsion System |
| AERA | Automated En Route Air |
| AERA | Automated En Route Air Traffic Control |
| AES | All Express Service |
| AES | Automatic Energy Selector |
| AESU | Air-transport Executive Staff Union |