Helicopter Sikorsky H-19C Chickasaw Serial 55-298 Register N17623 51-14304 used by US Army Aviation Army. Built 1952. Aircraft history and location Aircraft History 51-14304 US Army Aviation 1952-12-14Sikorsky S-55 c/n 55-298, ff:? del as H-19C, 51-14304, 14Dec52. N17623 - Send Updates Use APP to upload photo @ (optional) When Now? / / Send