Helicopter Sikorsky HO4S-2 Serial 55-305 Register N65375 55305 used by Royal Canadian Navy (1945-1968). Built 1952. Aircraft history and location Aircraft History 55305 Royal Canadian Navy (1945-1968) 1952-12-05RCN d/d 05dec52 HO4S-2 conv to HO4S-3 wfu 08may70 N65375 - ex 55305 Send Updates Use APP to upload photo @ (optional) When Now? / / Send