The S-64 Skycrane is an twin-engine heavy-lift helicopter designed as an enlarged version of the prototype Flying Crane S-60. First flew on May 9, 1962 it was followed by two other examples for testing by the German army. The Germans did not place an order, but the US Army bought it as the CH-54 Tarhe. The S-64 Aircrane is the current production version, manufactured by the Erickson Air-Crane company.
