Helicopter Sikorsky HO4S-3 Serial 55-548 Register N603X 1304 used by US Coast Guard USCG. Built 1953. Aircraft history and location Aircraft History For 1304 see also 2015 407gxp 54579 1304 US Coast Guard 1953-10-19Sikorsky S-55 c/n 55-548, ff:? del USCG as HO4S-3, 1304, 19Oct53. N603X - Send Updates Use APP to upload photo @ (optional) When Now? / / Send
