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Old 18th Jun 2006, 07:53
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captjns
 
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Originally Posted by BAe 146-100
Is that table correct cause I'm sure there is a 22K option available on the B737-800.

Ryanair seem to drop down to it on takeoff when possible.

BAe 146
It appears what you are referring to is de-rating thrust. Lets forget the 27k bump option. The engine is fully rated at 26k of thrust. The crew has the option of selecting 26k, 24k, or 22k via the FMC. From the selected rated, or de-rated thrust, if 24k or 22k are selected, an assumed temperature can be selected via the FMC either full 26k, or de-rated 24k, or 22k are not required. The second trust reduction is referred to as double de-rate.
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