ADI Sportster

The ADI Sportster is a two-seat gyroplane that has been marketed in plans form for homebuilding since 1974 by Aircraft Designs Inc.<ref name="KitplanesFeb2005">Downey, Julia: 2005 Trikes 'Chutes and Rotorcraft Directory, Kitplanes, Volume 22, Number 2, February 2005, page 54. Belvoir Publications. ISSN 0891-1851</ref><ref name="WDLA04">Bertrand, Noel; Rene Coulon; et al: World Directory of Leisure Aviation 2003-04, page 203. Pagefast Ltd, Lancaster UK, 2003. ISSN 1368-485X</ref> It was the first homebuilt gyrocopter design to be able to carry a passenger.

The design first flew in 1974 and is built from bolted and riveted dural aluminium sheet. The rotor blades use an NACA 8H12 airfoil<ref name="WDLA04"/>