Aviation English
Emergencies

Mayday 是什么？

Mayday International radiotelephony distress signal used to indicate a grave and imminent threat requiring immediate assistance.

Source: ICAO Doc 9432, FAA PCG

How is “Mayday” Used in Practice?

Mayday, Mayday, Mayday，这里是Delta 一三四，发动机故障，请求紧急着陆引导。

Certification Exam Relevance

ICAO Level 4ICAO Level 5ICAO Level 6EASA FCL.055

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

Related Aviation English Terms

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Frequently Asked Questions

Mayday 是什么？

International radiotelephony distress signal used to indicate a grave and imminent threat requiring immediate assistance.

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