Posky 747-400 Fuel Problem!!!

[Air France]

When i do a 13 HR flight i put around 90% of fuel but when i get to my destination i still have 40% left what is wrong???

[ste9889]

hey dnt comlain,lol, saves on a fuel pen

[Drew]

did you forget to start 2 of the engines? only joking

have you looked at your average fuel flow, and worked it out from there etc....

[runibl]

Could be that you got some unexpected strong tailwind.