The first helicopter to enter US military service and enter series production.  Known as the HNS-1 by the US Navy.  First flown on Wednesday, January 14, 1942.

Sikorsky VS-316 (XR-4)

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The first helicopter to enter US military service and enter series production. Known as the HNS-1 by the US Navy. First flown on Wednesday, January 14, 1942.


Learn more about the Sikorsky VS-316 (XR-4) at Vertipedia.

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Added to Vertipedia Images and categorized in 2 years ago

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