Helicopter Sikorsky H-37A Mojave Serial 56-126 Register N7069 57-1660 used by US Army Aviation Army. Built 1959. Aircraft history and location Aircraft History 57-1660 US Army Aviation 1959-06-29Sikorsky S-56, c/n 56-126, ff:? del US ARMY as H-37A, 57-1660, 29Jun59 redesig CH-37A, Oct 62 conv CH-37B, unk wfu & soc unk. N7069 - Keystone Helicopter Corp 1972-2011 Send Updates Use APP to upload photo @ (optional) When Now? / / Send