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What is the emergency frequency?

Choices

122.0 MHz
Incorrect. Review the explanation and the cited FAA reference for the correct answer.
✓ 121.5 MHzcorrect
121.5 MHz is the International Aeronautical Emergency Frequency. All ATC facilities and many aircraft monitor this frequency. Pilots in distress should declare an emergency on this frequency if unable to reach ATC on any other frequency.
118.0 MHz
Incorrect. Review the explanation and the cited FAA reference for the correct answer.
123.45 MHz
Incorrect. Review the explanation and the cited FAA reference for the correct answer.

Why

121.5 MHz is the International Aeronautical Emergency Frequency. All ATC facilities and many aircraft monitor this frequency. Pilots in distress should declare an emergency on this frequency if unable to reach ATC on any other frequency.

FAA source: AIM 6-3-1, AIM 6-2-2browse the reference library →

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