Federal Aviation Administration

Q-Code Subject Categories and Q-Code Combinations

Subject Categories:
[A ] Airspace Organization
[C ] Communications and Radar
[F ] Facilities and Services
[G ] Military
[I ] Instrument and Microwave Landing
[L ] Lighting
[M ] Movement and Landing Area
[N ] Terminal and En-route Navigation
[O ] Other Information
[P ] Air Traffic Procedures
[R ] Airspace Restrictions
[S ] Air Traffic and VOLMET Services
[T ] Hazard
[W ] Warnings
[X ] Other