A Kenyan IT man DIY-made an airplane in his backyard. The 42-year-old Gabriel Nderitu has no pilot or engineering background. He spent half a year researching the structure of the airplane on the Internet, and then spent another year designing and making it. Got this two-seater plane. The aircraft uses a 4,000-rpm Toyota engine, 74-inch wooden propellers and aluminum membrane wings, and weighs approximately 1,700 pounds.