Helicopter Sikorsky HR2S-1 Serial 56-005 Register 138422 used by US Marine Corps USMC. Built 1956. Aircraft history and location Aircraft History 138422 US Marine Corps 1956-05-24Sikorsky S-56, c/n 56-005, ff:? del US Marine Corps as HR2S-1, 138422, 24May56 soc & scr unk. 1959-08-07 soc 07aug59 Send Updates Use APP to upload photo @ (optional) When Now? / / Send
