Encyclopedia : H : H : H5D (2 articles)

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H-5 Dragonfly
The H-5 Dragonfly (Sikorsky S-51) was a light utility helicopter used by the US Army in the early Cold War period. It also served with the US Navy and Coast Guard with the designations HO2S and HO3S. The prototype S-51 flew for the first time in February 1946. It was also manufactured under lice..

 

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