Canadian Warplanes 7: Sikorsky R-4B Hoverfly helicopter
Sikorsky VS-316 (R-4B) Hoverfly Helicopter, RAF

(RAF Photo courtesy of the Shearwater Aviation Museum)
Sikorsky VS-316 (R-4B) Hoverfly Helicopter, RAF.
Sikorsky VS-316 (R-4B) Hoverfly Helicopter, RAF
(RAF Photo courtesy of the Shearwater Aviation Museum)
Sikorsky VS-316 (R-4B) Hoverfly Helicopter, RAF.