The Antonov 225 is the world's heaviest and largest jet ever built, with 32 wheels and a 291 foot wing span. It was designed in 1988 to airlift components for the Soviet space program, including rocket boosters and space shuttles, and can carry up to 250,000 kg internally or 200,000 kg externally on its upper fuselage, with external cargo able to be 70 meters long.

1. Antonov 225 Antonov or AN-225 is the world’s heaviest and largest jet ever built with the landing gear system of 32 wheels and a wing span of 291 feet. It was designed for the Soviet space program in 1988 and able to airlift the Energia rocket’s boosters, Buran space shuttle or ultra-heavy and oversize freight, up to 250,000 kg (550,000 lb) internally or 200,000 kg (440,000 lb) on the upper fuselage. Cargo on the upper fuselage can be 70 m long.