Helicopter Sikorsky S-55 Serial 55-823 Register 9629 used by Royal Canadian Air Force (1945-1968). Built 1954. Aircraft history and location Aircraft History 9629 Royal Canadian Air Force (1945-1968) 1954-12-03Sikorsky S-55 c/n 55-823, ff:? ordered by P&WC for RCAF del RCAF as 9629, 03Dec54. Send Updates Use APP to upload photo @ (optional) When Now? / / Send