| SIKORSKY S40 PAN AM CLIPPER | ||||
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New postcard made for Sikorsky Aircraft employees in 1993/94. Back states: S-40 "American Clipper". In 1931, it was the world's largest amphibian aircraft. The S-40 was powered by four Pratt & Whitney 575 hp Hornet engines. UTC Archive Photo printed by Sikorsky Aircraft
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