observation helicopter model by Sikorsky
Wikidata
HOS-1; Sikorsky Aircraft Corporation HOS-1; Sikorsky HOS-1; Sikorsky Observation Helicopter Design 1 Series 1
Sikorsky R-6, observation helicopter, Sikorsky Aircraft Corporation,
HO3S-1, R-6,
Location: KML, Cluster Map, Maps,
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