Helicopter Sikorsky HO4S-3G Serial 55-1116 Register 1325 used by US Coast Guard USCG. Built 1957. Aircraft history and location Aircraft History For 1325 see also se3160 1349 1325 US Coast Guard 1957-09-30Sikorsky S-55 c/n 55-1116, ff:? del USCG as HO4S-3G, 1325, 30Sep57. Send Updates Use APP to upload photo @ (optional) When Now? / / Send