Helicopter Sikorsky S-55C Serial 55-507 Register JA7151 used by Kaijō Hoan-chō JPCG (Japanese Coast Guard). Built 1953. Aircraft history and location Aircraft History JA7151 Kaijō Hoan-chō 1953-08-20Sikorsky S-55C, c/n 55-507, ff:? del Japanese Coast Guard as JA7151 20Aug53 w/o unk. Send Updates Use APP to upload photo @ (optional) When Now? / / Send