Helicopter Sikorsky H-19D Chickasaw Serial 55-1121 Register N75214 56-4251 used by US Army Aviation Army. Built 1957. Aircraft history and location Aircraft History 56-4251 US Army Aviation 1957-08-31US Army H-19D d/d 31Aug57 N75214 - Westec Air at Mesa, AZ 31jan86-18nov14 Send Updates Use APP to upload photo @ (optional) When Now? / / Send