Alexander Flyabout D  The Alexander Airplane Company D-1 Flyabout was an early entry into the light aircraft market by the popular biplane aircraft manufacturer. The aircraft was later manufactured by Aircraft Mechanics, Inc. The D-1 was a conventional landing geared high winged monoplane with side-by-side seating powered by a Continental engine, with a firewall-mounted fuel tank. The cabin featured doors on both sides of the aircraft. It was the first aircraft certified under new CAA rules for aircraft under . The prototype's capabilities were demonstrated by flying up to above Pikes Peak with the model. Test pilot Proctor Nichols later reported having flown through a tornado formation in the demonstrator returning from the Cleveland National Air Races.