The single seat SS model was introduced in 1988. All members of the design family were available as optionally conventional landing gear or tricycle gear-equipped aircraft. The family of aircraft all share common design features, including an enclosed cabin-style fuselage, horizontal stabilizer and tail fin all constructed of welded 4130 steel tubing. The wing is framed from riveted aluminium tubing with all surfaces covered in doped aircraft fabric. The wing includes flaps and has an optional folding system for transport and storage. The landing gear arrangement includes sprung-steel main gear and a similarly sprung steerable tail wheel or optional sprung-steel nose wheel. The single-seat SS model was developed into a line of side-by-side two seaters with different engine and fuselage designs. Capella Aircraft went out of business in late 2007, and the series is no longer in production. Variants SS Single seat cabin light aircraft with a gross weight of 625 lb (283 kg) and powered by a 40 hp (30 kW) Rotax 447 or a 50 hp (37 kW) Rotax 503 engine. The fuselage incorporates a rear window. First flown in 1988. XS Two seats in side-by-side configuration cabin light aircraft with a gross weight of 1,200 lb (544 kg) and powered by a 64 hp (48 kW) Rotax 582 engine. The fuselage incorporates a rear window. First flown in 1990. XLS Two seats in side-by-side configuration cabin light aircraft with a gross weight of 1,200 lb (544 kg) and powered by an 80 hp (60 kW) Rotax 912 four-stroke engine. The fuselage incorporates a rear window. First flown in 1990. XLS Super 100 Two seats in side-by-side configuration cabin light aircraft with a gross weight of 1,270 lb (576 kg) and powered by a 100 hp (75 kW) Rotax 912S four-stroke engine. Available in TR tricycle gear and TD taildragger models. The fuselage incorporates a rear window. Fastback Two seats in side-by-side configuration cabin light aircraft with a gross weight of 1,200 lb (544 kg) and powered by a 80 hp (60 kW) Rotax 912 four-stroke engine. First flown in 1995. Fuselage differs from the XS in that the rear window is eliminated and replaced with a high rear turtle deck, rendering the aircraft similar in appearance to a Piper J-3 Cub, Aeronca Champ or Taylorcraft B. Specifications and gallery below are for the XS variant.