Helicopter Sikorsky HO4S-3 Serial 55-875 Register 55875 used by Royal Canadian Navy (1945-1968). Built 1955. Aircraft history and location Aircraft History 55875 Royal Canadian Navy (1945-1968) 1955-05-16HO4S-3 RCN d/d 16may55 wfu 16may68 preserved Canadian Forces Base Penhold 1966-06-30 A Portrush noted onboard HMCS Provider (AOR-508) at Portrush, Northern Ireland Send Updates Use APP to upload photo @ (optional) When Now? / / Send