Hispano-Suiza 12YCrs engine. C-3602 Second prototype powered by 746 kW (1,000 hp) Hispano-Suiza 12 Y-51. C-3603 Production version with retractable undercarriage, powered by Hispano-Suiza 12 Y-51. Armed by one 20mm Oerlikon moteur-canon cannon firing through propeller hub, two 7.5mm machine guns in the wings and two machine guns in the rear cockpit. C-3603-0 Service trial aircraft with long-span (15.10 m (48 ft 6½ in)) wings. 10 built, of which 9 were later converted to C-3603-1 standard. C-3603-1 Main production version, with short span (13.74 m (45 ft 1 in)) wings. 142 built by 1944, plus further 6 assembled from spare parts in 1947–48. 20 converted to target tugs (Schlepp) from 1946 by Farner Werke, and 40 (including surviving original conversions) to improved standard by FFA and Farner from 1953–54. C-3603-1 Tr Advanced trainer version. Two built. C-3604 More powerful and heavier armed derivative of C-3603, powered by 929 kW (1,245 hp) Saurer YS-2 (a more powerful Swiss development of the Hispano-Suiza 12Y-51) and carrying an extra two 20mm cannon in its wings. One prototype and twelve production aircraft built. C-3605 Turboprop version with Lycoming T53 engine (24 converted from C-3603-1). It was much larger and also more powerful than the C-3601, with a maximum speed of 560km/h or 296mph. Operators Swiss Air Force Specifications (C-3603) See also References External links Das Virtuelle Luftfahrtmuseum Aircraft Walkaround - Dübendorf Museum 1930s Swiss attack aircraft C-036 Single-engined tractor aircraft Low-wing aircraft Aircraft first flown in 1939 World War II aircraft of Switzerland