page_title: Sikorsky S-64 Skycrane
section_title: Under Sikorsky
hierarchical_section_title: Sikorsky S-64 Skycrane / Development / Under Sikorsky
caption_attribution_description: English: Sikorsky S-64 Skycrane helicopter "Olga" lifting a segment of upper section of Toronto's CN Tower during construction, March 1975. (Digitized from original Kodachrome.)
context_page_description: The Sikorsky S-64 Skycrane is an American twin-engine heavy-lift helicopter. It is the civil version of the United States Army's CH-54 Tarhe. It is currently produced as the S-64 Aircrane by Erickson Inc.
context_section_description: The Sikorsky S-64 was designed as an enlarged version of the prototype flying crane helicopter, the Sikorsky S-60. The S-64 had a six-blade main rotor and was powered by two 4,050 shaft horsepower (3,020 kW) Pratt & Whitney JFTD12A turboshaft engines. The prototype S-64 first flew on 9 May 1962 and was followed by two further examples for evaluation by the German armed forces. The Germans did not place an order, but the United States Army placed an initial order for six S-64A helicopters (with the designation YCH-54A Tarhe). Seven S-64E variants were built by Sikorsky for the civil market.
  In March 1975, a Skycrane was used to lift sections of the uppermost antenna structure of the CN Tower in Toronto, Canada.
caption: Skycrane "Olga" lifting a CN Tower antenna segment
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