B777 Derate Takeoff Calculation by EFB
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B777 Derate Takeoff Calculation by EFB
Hi
When EFB calculates the thrust for a TO2 takeoff with assumed temperature, then does it limit itself to max of 25% reduction from max certified thrust or it does not?
Thanks
When EFB calculates the thrust for a TO2 takeoff with assumed temperature, then does it limit itself to max of 25% reduction from max certified thrust or it does not?
Thanks
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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
Mutt
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Thanks Mutt
I was under the impression that 25% was from the max. Do you have a reference regarding this?
Regards
I was under the impression that 25% was from the max. Do you have a reference regarding this?
Regards
Last edited by Haroon; 10th Feb 2013 at 12:43. Reason: 2nd thought