Helicopter Sikorsky H-19A Chickasaw Serial 55-065 Register N872Z 51-3847 used by US Air Force USAF. Built 1951. Aircraft history and location Aircraft History 51-3847 US Air Force 1951-11-10Sikorsky S-55 c/n 55-065, ff:? del USAF as H-19A, 51-3847, 10Nov51. N872Z - ex 51-3847, N872 Send Updates Use APP to upload photo @ (optional) When Now? / / Send