| Abbreviation | Description | Category | Link |
| HAI | Heli Association International. | Associations | |
| VFR | Visual Flight Rules. | Air law | |
| IFR | Instrument Flight Rules | Air law | |
| VTOL | Vertical Take Off and Landing | General aviation | |
| FADEC | Full Automated Digital Engine Control | Engine technology | |
| FAA | Federal Aviation Administration | FAA | |
| AMT | Aviation Maintenance Technician | General Aviation | |
| NTSB | National Transportation Safety Board | FAA | |
| FSDO | Flight Standards District Offices | FAA | |
| CVR | Cockpit Voice recorder | General aviation | |
| FDR | Flight Data Recorder | General aviation | |
| ADS-B | Automatic Dependent Surveillance - Broadcast | Navigation | |
| GPS | Global Positioning System | Navigation | |
| ATC | Air Traffic Control | Communications | |
| IMC | Instrument Meteorological Conditions | General aviation | |
| JAA | Joint Aviation Authorities | JAA | |
| GA | General Aviation | General Aviation | |
| UAV | Unmanned Air Vehicle | General Aviation | |
| JAR | Joint Aviation Requirements | JAA | |
| PPL | Private Pilot License | Pilot Licence | |
| ATPL | Airline Transport Pilot Licence | Pilot Licence | |
| CPL | Commercial Pilot Licence | General Aviation | |
| DGCA | Dictorate General of Civil Aviation | General Aviation | |
| TRTO | Type Rating Training Organisation | JAA | |
| SAR | Search And Rescue | JAA | |
| TC | Type Certification | JAA | |
| APIS | Approved Production Inspection System | JAA | |
| STC | Supplemental Type Certificate | JAA | |
| PMA | Parts Manufacturer Approval | JAA | |
| TSO | Technical Standard Orders | JAA | |
| FAR | Federal Aviation Regulation | FAA | |
| STOL | Short Take Off and Landing | General Aviation | |
| EAA | Experimental Aircraft Association | Associations | |
| ICAO | International Civil Aviation Organization | General Aviation | |
| ILS | Instrument Landing System | Navigation | |
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