July 6, 20169 yr Hi everyone. I would like to re-highlight this message from Mike as the fix for me. I had the same problem today with fuel consumption. I left KSFO for RCTP with a prediction of 39k remaining and now I'm 1000 miles out with a prediction of 5k. (lbs). The plane was struggling to reach cruise speed and altitude and I attributed it to warm pacific temperatures that ASN possibly missed. Yesterday, before the flight, I had re-calibrated/mapped my flaps and speed brake using FSUIPC. I also had a speed brake alert during takeoff and I used the / key to retract it fully. I've been searching all morning in the forum for potential solutions, and Mike's post stopped me in my tracks. I removed the mapping of the flaps and speed brake a minute ago, and my speed jumped up and my N1 dropped down. Fuel prediction just went from 5.5 to 8.0. This may not be the solution for all, but it was for me and I thought it was worth highlighting since his post is 3 pages back. Thank you Mike! Hi, Robin, By any chance, do you have flap controls working through FSUIPC? I believe there is a problem with such a configuration in which the flaps appear to be fully retracted but the sim sees them as extended. This would of course cause excess fuel consumption, but it should also cause speed and climb problems. Just a thought. Mike Bob Donovan - KBOS
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