Helicopter Sikorsky HO4S-3 Serial 55-710 Register 1307 used by US Coast Guard USCG. Built 1954. Aircraft history and location Aircraft History For 1307 see also tth 1307 se3130 1307 2015 407gxp 54588 1307 US Coast Guard 1954-06-04Sikorsky S-55 c/n 55-710, ff:? del USCG as HO4S-3, 1307, 04Jun54. Send Updates Use APP to upload photo @ (optional) When Now? / / Send