Aviation English
Meteorology

云底 是什么？

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

Source: ICAO Doc 9432, FAA PCG

How is “云底” Used in Practice?

我们观测到云底约1500英尺，请求下降许可。

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

云底高度高积云岗状高积云能见度

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Frequently Asked Questions

云底 是什么？

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

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