What is Cold soak?
Cold soak A condition in which aircraft fuel, systems, or equipment are cooled for an extended period during high-altitude flight, possibly causing condensation or freezing on landing.
Source: ICAO Doc 9432, FAA PCG
How is “Cold soak” Used in Practice?
Due to cold soak, residual ice may form on underwing surfaces after descent.
Certification Exam Relevance
Who Needs to Know This Term?
- Pilots
- Air Traffic Controllers
- Cabin Crew
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What is Cold soak?
A condition in which aircraft fuel, systems, or equipment are cooled for an extended period during high-altitude flight, possibly causing condensation or freezing on landing.
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