What is considered unauthorized entry onto a controlled taxiway?

Unauthorized entry onto a controlled taxiway is best described as a taxiway incursion. This term specifically refers to an aircraft, vehicle, or person entering a taxiway without permission, thereby potentially disrupting the safe and orderly movement of air traffic. Taxiway incursions can occur when vehicles operate on the taxiway without appropriate authorization, leading to safety hazards, such as conflicts with taxiing or departing aircraft.

In the context of airside operations, understanding taxiway incursions is crucial for maintaining safety and compliance with air traffic control regulations. Personnel operating on or near taxiways must be vigilant about following established procedures to prevent unauthorized access. This emphasizes the importance of proper training and adherence to operational protocols in the airside environment.

Runway incursions, ATC violations, and unauthorized taxiway usage all relate to situations that may compromise safety, but they are distinct categories. For example, a runway incursion specifically refers to unauthorized entry onto a runway, which presents a different set of operational challenges and risks than those on a taxiway.