Aviation English
Basic ATC

了解とは？

了解 An instruction to confirm that a message has been received and understood.

Source: ICAO Doc 9432, FAA PCG

How is “了解” Used in Practice?

ATC：N456CD、3000フィートまで降下して維持してください。了解。

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

リードバック報告してくださいクリアード維持して

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Frequently Asked Questions

了解とは？

An instruction to confirm that a message has been received and understood.

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