Helicopter Sikorsky H-19D Chickasaw Serial 55-923 Register 55-3194 used by US Army Aviation Army. Built 1956. Aircraft history and location Aircraft History 55-3194 US Army Aviation 1956-01-14Sikorsky S-55 c/n 55-923, ff:? del US Army as H-19D, 55-3194, 14Jan56. Send Updates Use APP to upload photo @ (optional) When Now? / / Send