Helicopter Sikorsky HRS-1 Serial 55-078 Register 127838 used by US Marine Corps USMC. Built 1951. Aircraft history and location Aircraft History 127838 US Marine Corps 1951-11-02Sikorsky S-55 c/n 55-078, ff:? del USMC as HRS-1, 127838, 02Nov51 1957-08-26 26aug57 soc Memphis Send Updates Use APP to upload photo @ (optional) When Now? / / Send
