Birdman TL-1

The Birdman TL-1 was an extremely minimalist aircraft sold in kit form in the United States in the mid-1970s for US$1,395.
Design and development.
The TL-1's fuselage is nothing more than a boom connecting a set of wings with a V-tail. The pilot's seat and a pedestal carrying the pusher engine are attached to the top of the boom just forward of the wing. Flight control is provided by a series of spoilers.
Construction is of wood covered with Monokote and the aircraft was designed to be quickly dismantled for transport or storage. With an empty weight of 122 lb (55 kg), it is held to be the lightest aircraft to have been flown at the time.