Aviation English
Meteorology

雲底とは？

雲底 Lowest altitude of the visible cloud layer, reported as base of scattered, broken, overcast.

Source: ICAO Doc 9432, FAA PCG

How is “雲底” Used in Practice?

約1500フィートの雲底を確認、降下クリアランスを要請します。

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

雲底高度積雲（高い）高積雲カステラヌス視程

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Frequently Asked Questions

雲底とは？

Lowest altitude of the visible cloud layer, reported as base of scattered, broken, overcast.

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