Bloomberg.com: U.S.

Bloomberg.com: U.S.: "that each ton of extra weight allows the plane to carry 12 fewer passengers, assuming an average weight of 175 pounds (79 kilograms) per person. Four tons, he says, could mean about 48 fewer people. Airbus says it will give an update on the A380 and other aircraft at the U.K.'s Farnborough Air Show, which opens July 19. "