Squawk Code

Definition

A four-digit octal code set on the aircraft transponder for ATC identification. Standard codes include 7700 (emergency), 7600 (communication failure), and 7500 (hijack).

Related Terms

Transponder

An aircraft electronic device that responds to ATC radar interrogation by transm...

Air Traffic Control(ATC)

A service provided by ground-based controllers directing aircraft movement in co...

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