Aviation English
Emergencies

Maydayとは？

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、こちらはデルタ・ワン・スリー・フォー、エンジン故障、緊急着陸のため即時ベクターを要求します。

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

Pan-Pan与圧喪失記憶項目緊急降下

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Frequently Asked Questions

Maydayとは？

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

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