延长防护时间 是什么？
延长防护时间 An officially authorized increase in the maximum allowable holdover time beyond standard tables, based on improved weather or de-icing conditions, to extend aircraft protection before takeoff.
Source: ICAO Doc 9432, FAA PCG
How is “延长防护时间” Used in Practice?
塔台，由于除冰后降雪减弱，请确认是否可以延长防护时间。
Certification Exam Relevance
Who Needs to Know This Term?
- Pilots
- Air Traffic Controllers
- Cabin Crew
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延长防护时间 是什么？
An officially authorized increase in the maximum allowable holdover time beyond standard tables, based on improved weather or de-icing conditions, to extend aircraft protection before takeoff.
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