Authorization for an aircraft to taxi on an active runway (other than crossing) must be communicated on which frequency?

• A. Appropriate Local Control Frequency
• B. Ground Control Frequency
• C. Appropriate Local Control Frequency; Ground Control Frequency
• D. Tower Frequency

Answer: (C)

Moving onto or along an active runway is controlled by the controller in charge of that runway, the local control (tower). Ground control handles taxiing on the rest of the movement area, coordinating routes to and from the runways. Because you’re dealing with both the ground route and the runway entry, the authorization is typically communicated on both frequencies: first the local control frequency for the runway entry clearance, and also on the ground control frequency to coordinate the taxi path to reach that point. This dual communication ensures safe, clear coordination between the controllers and the aircraft as you transition onto and off the active runway.