Helicopter Sikorsky H-19D-3 Serial 55-975 Register 55-3223 used by US Army Aviation Army. Built 1956. Aircraft history and location Aircraft History 55-3223 US Army Aviation 1956-06-08Sikorsky S-55 c/n 55-975, ff:? del US Army as H-19D-3, 55-3223, 08Jun56. Send Updates Use APP to upload photo @ (optional) When Now? / / Send