B-25 Mitchell TondelayoB 25 Mitchell Tondelayo airplane model. The B 25 was designed for the United States' Army Air Corps before the Second World War. The North American company had never designed a multi engine bomber before. The original design had shoulder mounted wings and a crew of three in a narrow fuselage. The USAAC then decided its new bomber would need a much larger payload double the original specifications. North American designers dropped the wing to the