| Abbreviation | Definition |
|---|---|
| AR&O | Airline Repair & Overall |
| AR(A) | Airborne Radar (Approach) |
| ARAC | Army Reserve Aviation Command |
| ARAC | Aviation Rulemaking Advisory Committee |
| ARAM | Aviation Range and Aerospace Meteorology |
| ARAP | Associated Retired Aviation Professionals |
| ARC | Aviation Research Centre |
| ARC | Airport Reference Code |
| ARC | Airworthiness Review Certificate |
| ARCAL | Aircraft Radio Control Of Aerodrome Lighting |
| ARCO | Aircraft Resource Control Office |
| ARDU | Aircraft Research and Development Unit |
| ARE | Aircraft Removable Equipment |
| AREVA | Adoption Resource Exchange of Virginia in Airports |
| AREZ | Aircraft Removable Equipment Zone |
| ARF | Aircraft Repair Flight |
| ARG | Aviation Research Group |
| ARGOS | Aviation Research Group Orkney and Shetland |
| ARINC | Aeronautical Radio, Inc |
| ARPN | Aircraft and Related Procurement Navy |