A
- Above Ground Level (AGL)
- Aerodynamic Center
- Afterburner
- Ailerons
- Air Charter
- Air Traffic Control (ATC)
- Aircraft Weight And Balance
- Airline Crew Rest Rules
- Airplane Deicer
- Airplane Tail Numbers
- Airport Taxiway Markings
- Airspeed Indicator
- Altimeter
- Angle Of Attack (AOA)
- Apu
- Area Navigation (RNAV)
- Asos / Awos
- Atc Delay
- Atp Certificate
- Attitude Indicator
- Automated Terminal Information Service (ATIS)
- Automatic Direction Finder (ADF)
- Autopilot