Detailed history and photos of helicopter Sikorsky HO4S-1 Serial 55-007 Register 125507 used by US Navy USN Track service timeline and current status. Aircraft History 125507 US Navy preserved at El Mirage 1950-11-30Sikorsky S-55 c/n 55-007, ff:? acc BuAerRep (BAR) East Hartford, CT, 30Nov50 del USN as HO4S-1, 125507, 07Dec50 Send Updates Use APP to upload photo @ (optional) When Now? / / Send
