Helicopter Sikorsky H-37A Mojave Serial 56-098 Register 57-1644 used by US Army Aviation Army. Built 1958. Aircraft history and location Aircraft History 57-1644 US Army Aviation 1958-08-20Sikorsky S-56, c/n 56-098, ff:? del US ARMY as H-37A, 57-1644, 20Aug58 redesig CH-37A, Oct 62 conv CH-37B, unk wfu & soc unk. Send Updates Use APP to upload photo @ (optional) When Now? / / Send
