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Radio communicationsQuestion 261 of 934

When may a pilot deviate from a rule because of a radio failure that creates an emergency?

  1. Never, because no rule allows a deviation of any kind
  2. Only when ATC approves it by a light signal
  3. Only when the pilot is in Class A airspace
  4. As much as the emergency requires (14 CFR 91.3(b))
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Correct answer: As much as the emergency requires (14 CFR 91.3(b))

14 CFR 91.3(b) lets a pilot deviate from rules in Subparts A and B to meet an emergency.

Source: Aeronautical Information Manual (FAA, Basic with Change 3, 9 July 2026), AIM 6-4-1 Two-way Radio Communications Failure, page 512

Practice radio communications

Questions last reviewed: 18 October 2026