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Decision making and flight planningQuestion 783 of 934

When should a pilot test an analog 121.5 MHz ELT in the aircraft?

  1. In the first 5 minutes after any hour
  2. In the last 5 minutes before any hour
  3. At any time, if the pilot tells ATC first
  4. In flight, but only when below 1,000 feet AGL
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Correct answer: In the first 5 minutes after any hour

Tests should last no more than three audible sweeps. Airborne tests are not authorized.

Source: Aeronautical Information Manual (FAA, Basic with Change 3, 9 July 2026), AIM 6-2-4 Emergency Locator Transmitter (ELT), page 490

Practice decision making and flight planning

Questions last reviewed: 18 October 2026