Helicopter Sikorsky HO4S-3 Serial 55-746 Register 1310 used by US Coast Guard USCG. Built 1954. Aircraft history and location Aircraft History For 1310 see also tth 1310 407gxp 54596 1965 se3160 1310 1310 23Jul54 US Coast Guard 1954-07-23Sikorsky S-55 c/n 55-746, ff:? del USCG as HO4S-3, 1310, 23Jul54. 1961-04-25w/o 25apr61 Send Updates Use APP to upload photo @ (optional) When Now? / / Send