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Guest glide

744 V SPEED CALCULATION

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Guest glide

Can anyone help with this one Page 41 of the manual which gives a step by step guide to the v speed calculations , step 4 says determine the desired thrust settings (full or derated)and flap settings for takeoff, my question is how do you determine or decide what flap and derate settings you need i cant find any info about this please can an expert explain this whole process cos i seem to be missing somthingthanks in advanceKav

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Guest glide

Oh and also where do you get the assumed temporature to put in the fmcas this figure may be considerably higher to fool the computer in to giving a derated T/O N1 EG 40deg C assumed on a day that is actually 15 deg CthanksKav

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