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25th Nov 2012, 21:40

#20 (permalink)

Denti

Join Date: Mar 2001

Location: I wouldn't know.

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Actually, no, not necessarily. Boeing allows user selectable derates, for example instead of 26k derates to 24 and 22k. On top of that one can use assumed temperatures for total thrust reductions in excess of 30% on take off.

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