In 1929 the Pratt brothers at Geelong near Melbourne commenced work on a light aircraft known as the Amsco monoplane at the Workshops of AMSCO at Belmont Common in Victoria initially along the lines of a Heath parasol.

The DR-107 One Design is one of a series of high-performance fully-aerobatic light aircraft designed by Daniel Rihn and produced in kit form for the amateur constructor by Aircraft Spruce & Specialty of Corona, California.