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Thread: B777 Derate Takeoff Calculation by EFB
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Old 10th February 2013 | 12:34
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mutt
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From: ME
Obviously depends on the software, but the AFM permits you to assume 25% from the rating in use and not the max. Hence the reason you use VMCG at the actual temperature and are prohibit from going from D-TO2 to TO.

Mutt
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