| Category | Acronym | Meaning |
|---|---|---|
| Navigation | ADF | Automatic Direction Finder |
| Navigation | DME | Distance Measuring Equipment |
| Navigation | ILS | Instrument Landing System |
| Navigation | NDB | Non-Directional Beacon |
| Navigation | VOR | VHF Omnidirectional Range |
| Navigation | RNAV | Area Navigation |
| Communication | ATC | Air Traffic Control |
| Communication | ATIS | Automatic Terminal Information Service |
| Communication | CTAF | Common Traffic Advisory Frequency |
| Communication | CPDLC | Controller-Pilot Data Link Communications |
| Communication | PPL | Private Pilot License |
| Weather | ASOS | Automated Surface Observing System |
| Weather | METAR | Meteorological Aerodrome Report |
| Weather | TAF | Terminal Aerodrome Forecast |
| Weather | CB | Cumulonimbus |
| Safety | ACAS | Aircraft Collision Avoidance System |
| Safety | ELT | Emergency Locator Transmitter |
| Safety | ETOPS | Extended Twin Engine Operations |
| Safety | GPWS | Ground Proximity Warning System |
| Safety | RAAS | Runway Awareness and Advisory System |
| Regulations | FAR | Federal Aviation Regulations |
| Regulations | ICAO | International Civil Aviation Organization |
| Regulations | TFR | Temporary Flight Restriction |
| Regulations | NTSB | National Transportation Safety Board |
| Regulations | TSA | Transportation Security Administration |
| Technology | ADS-B | Automatic Dependent Surveillance–Broadcast |
| Technology | FMS | Flight Management System |
| Technology | HUD | Head-Up Display |
| Technology | IRU | Inertial Reference Unit |
| Technology | TCAS | Traffic Collision Avoidance System |