PPRuNe Forums - T/O MAC in 744

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littlejet

31st Jul 2006 09:23

T/O MAC in 744

If the T/O MAC in L.S. appears to be, say 22.5 %, what should you enter in the FMC 22% or 23% since it will accept only round figures. And why?
Thnx

Rainboe

31st Jul 2006 12:42

It doesn't matter. It makes such a minor difference to the trim it is of no consequence. What does matter is that both pilots satisfy themselves that 22 or 23% has been entered correctly. It is all done on estimated approximate baggage/people weights anyway, it is over-striving for theoretical accuracy to specify one or the other.

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