Detailed history and photos of helicopter Sikorsky HO4S-1 Serial 55-010 Register 125510 used by US Navy USN Track service timeline and current status. Aircraft History 125510 US Navy soc 4feb57 1950-12-29Sikorsky S-55 c/n 55-010, ff:? acc BuAerRep (BAR) East Hartford, CT, 29Dec50 del USN as HO4S-1, 125510, 05Jan51 Send Updates Use APP to upload photo @ (optional) When Now? / / Send
