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744F: FMC CALC vs TOT fuel indication differences

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Hi, I'm flying EPWA-RJAA and I'm having problems with FMC calculated fuel - it is descreasing too fast. After 5h of flight, the difference between the TOT and CALC has passed 40k lbs, with calculated value of 135k and totalizer value of 178k lbs.I have my failures set to off.

No the difference has increased to 51k lbs (59.x tot vs 111 calc)

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