The S-4 Kania 2 is a Polish two-seater glider-tug and general-purpose monoplane first flown in 1957. The S-4 Kania 2 is a braced parasol-wing monoplane with two open tandem cockpits, powered by a M-11D five-cylinder air-cooled radial engine providing a top speed of 180 kmh and a range of 800 km. Research S-4 Kania 2
 
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