Aviation English
Long Haul

体内時計とは？

体内時計 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 “体内時計” Used in Practice?

乗員の勤務時間は疲労を最小限に抑え、注意力を最適化するため体内時計を考慮してスケジュールされます。

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

概日オフセット疲労リスク管理乗員増員クルーの勤務時間

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Frequently Asked Questions

体内時計とは？

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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