Definition
A legal status under U.S. aviation regulations indicating that an aircraft, while operating on or in the vicinity of an airport, is subject to the rules, directives, and jurisdiction of the airport operator or its designated officials. When an aircraft is under the control of the airport authorities, the pilot must comply with airport procedures, ground movement instructions, noise abatement rules, and any local operating restrictions established by the airport.
Plain English
It means the aircraft is on or near an airport and has to follow that airport's rules and the instructions of the people who run it.
Context Anchor
Seen in airport rules, parking or hangar agreements, facility notices, ramp procedures, and discussions of who may use or enter parts of an airport.
Why Pilots Care
Even when away from ATC, pilots must follow airport-specific rules — taxi routes, hours of operation, noise procedures, run-up areas — because being on the airport places the aircraft under that authority's jurisdiction.
Intuition Check
Do not read “control” as the airport taking over the flight or replacing air traffic control. Here it means control over airport property, access, and ground permissions.
Example Sentence 1
Once the aircraft taxied off the runway, it remained under the control of the airport authorities and had to follow the posted taxi procedures.
Example Sentence 2
All ground vehicle movements on the ramp fall under the control of the airport authorities.