降下開始点とは？
降下開始点 The calculated point during cruise at which an aircraft initiates descent from cruising altitude toward destination, usually determined by onboard flight management systems.
Source: ICAO Doc 9432, FAA PCG
How is “降下開始点” Used in Practice?
パイロット：降下開始点に到達しました。クリアされた180へ降下を開始します。
Certification Exam Relevance
Who Needs to Know This Term?
- Pilots
- Air Traffic Controllers
- Cabin Crew
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降下開始点とは？
The calculated point during cruise at which an aircraft initiates descent from cruising altitude toward destination, usually determined by onboard flight management systems.
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