When is the phrase 'ATC CLEARS' used?

The phrase "ATC CLEARS" is utilized in aviation communication specifically when an air traffic controller is issuing clearance for an aircraft to proceed with a certain action, such as takeoff, landing, or taxiing. This phrase is used to indicate that the clearance has been officially given by ATC, ensuring that the pilot understands that they have permission to execute the maneuver.

The context for this phrase being specifically related to communication through a non-ATC facility highlights the importance of clarity and authority in air traffic control. When clearance is relayed through a non-ATC facility, it is critical for the pilot to clearly acknowledge the clearance to maintain safety and ensure understanding of the instructions provided.

This usage emphasizes the role of the designated authority (the ATC) in controlling air traffic and ensuring that pilots operate within the confines of what has been deemed safe and permissible by air traffic regulations. While clearance confirmation, landing reports, or delay notifications are important aspects of flight operations, they do not capture the precise moment that the controller communicates the specific clearance instructed to the pilot.