Inside World's Biggest Passenger Plane - First Picture -- This first picture of the interior of the 130-ton Bristol Brabazon shows the spacious six abreast seating, and was made during the "Brab's" visit to London Airport - its first touch-down outside its home base of Filton, Bristol. The eight-engine Brabazon, the world's largest passenger plane, was designed as experimental prototype of planes that will span the Atlantic at 300 miles an hour, carrying 100 passengers in luxury, and up to 230