Aviation English
Meteorology

ทัศนวิสัยหลัก คืออะไร?

ทัศนวิสัยหลัก Greatest visibility value equaled or exceeded for at least half the horizon.

Source: ICAO Doc 9432, FAA PCG

How is “ทัศนวิสัยหลัก” Used in Practice?

ทัศนวิสัยหลักที่รายงานที่สนามสำหรับการเข้าใช้มีเท่าใด?

Certification Exam Relevance

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

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

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Frequently Asked Questions

ทัศนวิสัยหลัก คืออะไร?

Greatest visibility value equaled or exceeded for at least half the horizon.

Where can I learn this term for free?

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