Controlled aerodrome

A controlled aerodrome is an aerodrome where air traffic control service is provided for aerodrome traffic. It is typically used where traffic volume or complexity requires clearances and instructions for taxi, take-off, landing and movements in the traffic circuit. Before operating there, the pilot listens to the current information if available, establishes radio contact with the appropriate ATC unit and follows the issued clearances. If a clearance cannot be complied with, the pilot must advise ATC and request an alternative.