Hii have a problem, i've downloaded few flight plan for the pmdg, i put into the fmc, but i can't figured out how much fuel need for the trip, and if i put 100% 0% 100% the fmc show only 6,2 thats the right?i put the zwf and the reserve and cost, and i get the message unbl crzWhat did i wrong?sorry for my english::}

I use FSBuild to both calculate the route and the amount of fuel.Bob

If you have the distance for your route and the wind information, you can also look at the tables which come with the PMDG manual. Open the "02 PMDG Cruise" PDF and have a look at the tables and the example given at the end.I haven't found a flight, where it hasn't worked out yet, except for faults on my side of the computer.You only have to pay attention to the units, since the tables show figures in Lbs.kind regards,Christian