| Abbreviation | Definition |
|---|---|
| DDPG | Dispatch Deviations Procedures Guide |
| DEAA | Double Eagle Aviation Academy |
| DEP | Damage Evaluation Process |
| DEP | Data Entry Plug |
| DER | Departure End of the Runway |
| DFAI | Dana Farms Aviation Inc |
| DFDAU | Digital Flight Data Acquisition Unit |
| DFDR | Digital Flight Data Recorder |
| DFPRM | Duct & Fuel Pipe Repair Manual |
| DGA | Data Gathering Application |
| DGCA | Directorate General for Civil Aviation |
| DGCA | Directorate General of Civil Aviation |
| DGSAS | Directorate General of Safety and Aviation Services (Oman) |
| DHAS | Dutch Historic Aviation Sites |
| DIA | Denver International Airport |
| DLDB | Data Link Data Block |
| DLH | Deutsche Lufthansa |
| DLNA | Diplexer Low Noise Amplifier |
| DLODS | Duct Leak Overheat Detection System |
| DLR | Data Link Recorder |