MAKE A MEME View Large Image Sikorsky R-4 in flight over England 1945.jpg A Sikorsky R-4 Hoverfly helicopter in flight at an RAF Fighter Command rotor flying school where pilots already qualified on winged types were being taught to handle this aircraft SUK14195 ...
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Keywords: RAF Sikorsky R-4 in flight over England 1945.jpg A Sikorsky R-4 Hoverfly helicopter in flight at an RAF Fighter Command rotor flying school where pilots already qualified on winged types were being taught to handle this aircraft SUK14195 1945-04 Australian armed forces Image copyright Copyright expired - public domain frame cropped PD-Australia Sikorsky R-4
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