First flight of the Westland Westminster
Sunday, June 15, 1958
Description
The aircraft, derived from the Sikorsky S-56 but with turbine engines mounted on the roof, flew with an open tubular framework and monocoque cockpit. Source: "Helicopters & Autogyros of the World", Paul Lambermount with Anthony Pirie, Cassell & Company Ltd., 1970, Page 148
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