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Question: The flight crew of a turbojet aeroplane prepares a flight using the following data: Flight leg ground distance: 4 000 NM, Flight level FL 370; "Long range" flight regime, Effective wind at this level: head wind of 50 kt. Temperature: ISA, Centre of gravity (CG): 37 %, Pack flow : LOW (LO), Anti ice: OFF, Reference landing mass: 140 000 kg, Taxi fuel: 500 kg, Final reserve fuel: 2 400 kg. The fuel quantity which must be loaded on board the aircraft is:?