生物钟是什么？

生物钟 The natural internal time-keeping system that regulates physiological activities, directly affecting crew alertness and fatigue during time zone changes and long-haul operations.

Source: ICAO Doc 9432, FAA PCG

How is “生物钟” Used in Practice?

机组执勤时间根据生物钟安排，以减少疲劳并优化警觉性。

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

生物钟是什么？

The natural internal time-keeping system that regulates physiological activities, directly affecting crew alertness and fatigue during time zone changes and long-haul operations.

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Last updated: March 09, 2026

生物钟 是什么？