Something doesnt add up... or its just to early for my brain to work
Anyway, 70,000 kgs plus 40,800 kgs (90,000 lbs engine weight) = 110,800 kgs OEW. Plus 30,000 Kgs passenger weight = 140,800 kgs.
MTOW 146,000 kgs - 140,800 kgs = 5,200 kgs for fuel?
Where did i go wrong? Or maybe you should express the engine weight in KGS as included in the OEW?
Mutt