The Sikorsky S-56 (US Army designation H-37 Mojave) was an American utility heavy-lift helicopter in service from 1956 to the early 1970's. The Sikorsky S-56 was powered by two Pratt and Whitney R-2800-54 radial piston engines providing a top speed of 209 kmh and a range of 233 km. The Sikorsky S-56 carried a flight crew of three and up to 36 troops or 24 litters or 10000 lbs of freight in the hold or as a slung load. Research Sikorsky S-56
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Abbreviations
Research Sikorsky S-56
