The aircraft has a main body 1 and a pair of sub bodies 4 and 5 positioned substantially in parallel with the main body 1 and respectively in both of the left and right sides of the main body 1. A canard 3 and main wings 8 and 9 each have a central portion fixed to the main body 1 and portions fixed respectively to the sub bodies 4 and 5, near left and right ends of the wings. Engines 6 and 7 are respectively mounted on outer surfaces of the sub bodies 4 and 5. The sub bodies 4 and 5 are thinner than the main body 1. The canard 3, which is positioned closest to the fore end of the aircraft, has a shorter wing span than the other wings. The sub bodies 4 and 5 contain fuel. The fuel is supplied to the engines 6 and 7 assuring high safety. The main wings 8 and 9 are positioned, shifted respectively forth and back relative to the main body 1. Therefore, stability is not impaired even if cargos are loaded into the main body over a wide range from the bow to the tail.