vgtu-154m

You are definitely not alone. The Simbrief profiles overpredict the required fuel burn relative to the iniBuilds Tristar and actually in this case, it is the Simbrief profile that needs correcting. For example, I once dispatched between EGLL and TBPB with around 30.7 tonnes of payload, and the Simbrief dispatch release said that I needed over 90 tonnes of fuel for a flight of just around 9hrs long. That's almost 10 tonnes of fuel burn per hour when the actual Tristar only burns around 7.5-8 tonnes per hour on average. So that's an overprediction of around 10-15% per flight by Simbrief. My own conservative estimates suggest that from now on, every flight will need a fuel factor bias of around M10 to M15. EGLLTBPB_PDF_1776325525.9d4b1b23.pdf