6/9/2023 0 Comments Learn to fly 3 codesIf a controller asks you to change codes, always acknowledge by reading the new code back to the controller. Code 7500 is the hijacking code, and code 7600 is used by instrument pilots in case of communications failure. Code 7700, for instance, is the emergency transponder code, used only to alert ground personnel that you are in distress. Be careful when setting your transponder-some codes have special meanings. The regulations require that all transponder-equipped airplanes must have them turned on while in flight. Otherwise, enter a specific code as directed by a radar controller while receiving radar services. Always set the four numbers on your transponder to 1200 when flying VFR. In congested areas the transponder will be replying to interrogation from several radars, while in remote areas it may receive only an occasional interrogation. Each time the transponder reply light flickers, it has responded to an interrogation. Interrogation signals transmitted from the ground are received by your transponder, and it replies with a coded signal which the controller can read on the radar scope. This post comes to us from Bob Gardner‘s The Complete Private Pilot.Īlthough the transponder has no microphone or speaker, it is a means of communication with ground radar facilities. Today we’re talking communication procedures, specifically your airplane’s transponder.
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