Radio communicationsQuestion 256 of 934

A pilot with a coded radar beacon transponder loses two-way radio capability. Which code should the pilot set?

  1. 7700
  2. 7500
  3. 7600
  4. 1200
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Correct answer: 7600

After a loss of two-way radio capability, the pilot should set Mode A/3 code 7600.

Source: Aeronautical Information Manual (FAA, Basic with Change 3, 9 July 2026), AIM 6-4-2 Transponder Operation During Two-way Communications Failure, page 513

Practice radio communications

Questions last reviewed: 18 October 2026