03.10.02 GENERAL DESCRIPTIONFuel TanksAll fuel for the engines and APU are stored within the wing. The three tanks, left main, right mainand center tank are of wet wing construction. The left and right
main tanks are constructed toinclude a dry bay area located over the engine hot section. Outboard of both main tanks is a surgetank to contain overflow and prevent spills. The surge tanks are normally empty; however, iffuel gets into the surge tanks, the fuel drains back to the respective main tank on the B757 andthe center tank on the B767.On the B757, per the Systems manual, each main tank has a capacity of 2170 U.S. gallons (14,600lbs.); the center tank capacity is 6900 U.S. gallons (46,200 lbs). On the B767, each main tank has acapacity of 6010 U.S. gallons (40,267 lbs); the center tank capacity is 11,960 U.S. gallons (80,132lbs). The fuel density used for these calculations was based on 6.7 lbs./U.S. gallons. The AOMlimitations section regarding fuel capacities uses a maximum allowable fuel density calculation of7.1 lbs./U.S. gallons, therefore the calculations are slightly higher.