Helicopter Sikorsky H-37A Mojave Serial 56-030 Register 54-1001 used by US Army Aviation Army. Built 1957. Aircraft history and location Aircraft History 54-1001 US Army Aviation 1957-05-03Sikorsky S-56, c/n 56-030, ff:? del US ARMY as H-37A, 54-1001, 03May57 redesig CH-37A, Oct 62 conv CH-37B, unk wfu & soc unk. Send Updates Use APP to upload photo @ (optional) When Now? / / Send