[1][2] The aircraft was predominantly made from aluminium, with some stainless steel used for the wing ribs, controls and fittings.
Its four-piece 60.75 ft (18.5 m) span high aspect ratio wing employed a modified Wortmann FX-61-163/35SF airfoil.
[1][2] The aircraft was still operational in August 2011, owned by William G. Osoba of Wichita, Kansas, United States, but was removed from the US register in April 2019 and its fate is unknown.
[1][2] On July 2, 2011, Osoba and his wife Christine flew the Gemini on a 565 mi (909 km) free distance flight from Zapata, Texas to just east of Amarillo, Texas, a flight which won the 2011 Barringer Trophy.
[6][7] Data from Sailplane Directory[1]General characteristics Performance Other gliders with Fowler flaps