US Navy receives its first helicopter (Sikorsky XHNS-1)
Saturday, October 16, 1943
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Description
XHNS-1 was the US Navy designation for the YR-4B. Source: VFS 2019 VTOL History Calendar
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Description
XHNS-1 was the US Navy designation for the YR-4B. Source: VFS 2019 VTOL History Calendar
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