Re: B773 fuel consumption?
This off a recent flight in a -300ER. 617 air miles we burned 13 tonnes, flight time of 1:26. TOW was 262.1 tonnes, landing very near MLW.
The book shows a cruise burn of: 8.7 tonnes per hour at 300 tonnes, FL 330
7.0 tonnes per hour at 240 tonnes, FL 350
For a 4000 mile mission in zero wind conditions you are looking at 8.3 tonnes an hour on average for a landing at MLW. If you were 50 tonnes lighter on the same mission you would burn 6.8 tonnes an hour on average. SMOC must have got his info from a 777-200 driver because those are the figures for that aircraft.
Hope that helps,
Typhoonpilot