Helicopter Sikorsky HRS-3 Serial 55-949 Register 144251 used by US Navy USN. Built 1956. Aircraft history and location Aircraft History 144251 US Navy 1956-04-16Sikorsky S-55 c/n 55-949, ff:? del USN as HRS-3, 144251, 16Apr56. Send Updates Use APP to upload photo @ (optional) When Now? / / Send
