Sullivan Model K-3 Crested HarpyThe Sullivan Model K-3 Crested Harpy is a three place light sport aircraft of the 1920s.DesignThe Crested Harpy was a low wing monoplane, with an enclosed cabin which could accommodate a pilot and two passengers. It had conventional landing gear, and was powered by a Kinner K-5. The fuselage is constructed of welded steel tubing with aircraft fabric covering. The Wichita-assembled aircraft featured soundproofing materials.