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Radio communicationsQuestion 259 of 934

When should a pilot press the IDENT button on the transponder?

  1. Only when ATC asks for it
  2. After every transponder code change
  3. Each time the airplane enters a new airspace class
  4. Above 10,000 feet MSL on any flight
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Correct answer: Only when ATC asks for it

Transponder equipment must be operated only as ATC specifies. Use IDENT only when requested.

Source: Aeronautical Information Manual (FAA, Basic with Change 3, 9 July 2026), AIM 4-1-20 Transponder and ADS-B Out Operation — IDENT Feature, page 223

Practice radio communications

Questions last reviewed: 18 October 2026