The A2 CZ Ellipse Spirit (sometimes spelled Elipse Spirit) is a Czech ultralight aircraft, designed and produced by A2 CZ. The aircraft was introduced at the Aero show in 2011 and is supplied complete and ready to fly or as a kit for amateur construction. The aircraft was designed to comply with the Fédération Aéronautique Internationale rules. It features a cantilever low wing, a two seats in side-by-side configuration cockpit, tricycle landing gear and a single engine in tractor configuration. The aircraft of all-composite construction. Its 8.0 m (26.2 ft) span elliptical wing employs rounded wingtips and fixed slots in the outer portion of the wing and dive brakes. Optional fuel capacity is 100 litres (22 imp gal; 26 US gal) giving a range of 1,730 km (1,075 mi). The standard engine is the ULPower 260iS four-cylinder, four-stroke aircraft engine of 107 hp (80 kW) and other engines available include the 100 hp (75 kW) Rotax 912S and 912iS, plus the 100 hp (75 kW) Lycoming IO-233. The basic fixed gear Ellipse was undergoing development in 2011 into a retractable gear version as well as versions for the US light-sport aircraft category.