Helicopter Sikorsky HRS-2 Serial 55-106 Register N15187 129024 used by US Marine Corps USMC. Built 1952. Aircraft history and location Aircraft History 129024 US Marine Corps 1952-02-28Sikorsky S-55 c/n 55-106, ff:? del USMC as HRS-2, 129024, 28Feb52 1955-02-23 Sikorsky HRS-3 23feb55 N15187 - ex 129024 Send Updates Use APP to upload photo @ (optional) When Now? / / Send