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Old 21st May 2019 | 22:43
  #17 (permalink)  
safelife
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Joined: May 2006
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From: FL510
Our company had a visit from CFM, and their take was the optimum cool down time was 15 minutes.
Anything shorter eats into engine's life.
3 min is a bare minimum, any further minute helps increase engine life.
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