What is 体内時計?
In this glossary, 体内時計 refers to: The natural internal time-keeping system that regulates physiological activities, directly affecting crew alertness and fatigue during time zone changes and long-haul operations.
How is 体内時計 used in aviation?
In aviation communication, this term appears in contexts such as: "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。"
Why does 体内時計 matter in aviation?
体内時計 matters because it supports clear communication in Long Haul contexts for Pilots, Air Traffic Controllers, and Cabin Crew. It also connects to aviation training and exam language such as ICAO Level 4, ICAO Level 5, ICAO Level 6, and EASA FCL.055.
Who uses 体内時計?
体内時計 is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.
What category does 体内時計 belong to?
In this glossary, 体内時計 is grouped under Long Haul. Related pages in this category explain adjacent procedures, commands and operational concepts.
Where does this definition come from?
This definition is sourced from ICAO Doc 9432, FAA PCG and published by Protermify Aviation as a static aviation reference page.