Regulations

Transponder

Definition

An aircraft electronic device that responds to ATC radar interrogation by transmitting a coded signal with identification and altitude information. Mode A provides ID, Mode C adds altitude, Mode S adds data link.

Related Terms

Squawk Code

A four-digit octal code set on the aircraft transponder for ATC identification. ...

Automatic Dependent Surveillance-Broadcast(ADS-B)

A surveillance technology where aircraft determine position via GPS and broadcas...

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