beaten to the draw
230 pax at 98kg each including bags i.e. 77kg+21kg; add 900kg of other cargo. Available Flight Levels are 310, 350,390. Assume 4500nm still air ISA at M0.80; 200nm div, 30min hold, 5% contingency plus one missed approach. Guess OWE is Boeing’s catalogue figure plus 1.5 tonnes i.e. 91.6 tonnes. Trip burn ~ 47 tonnes, 8.3 tonnes total reserve. When AUW = 145.8 tonnes then half of cruise fuel is expended. This is at about 1790nm. Laptop figures are 4700kg/hr at that point. Trip time 9hrs 52min. Awfully rushed though and I may have made a mistake. Cross check with other replies.