In case of total communication failure in flight, what should the pilot set the transponder to?

In the event of a total communication failure during flight, the appropriate action for a pilot is to set the transponder to 7600. This transponder code is specifically designated for indicating radio communication failure to air traffic control and other nearby aircraft.

Setting the transponder to 7600 assists those on the ground in recognizing that the aircraft is experiencing a loss of communication, which enables them to take necessary precautions and provide assistance as needed. It also informs other pilots in the vicinity that the aircraft may be unable to respond to communications, thus enhancing overall airspace safety.

Using this code helps in managing potential conflicts and ensuring that the pilot retains their rights and prioritization in air traffic situations. Therefore, setting the transponder to 7600 is the correct response for signaling a communication failure.