| Abbreviation | Description | Category |
| 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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