Helicopter Sikorsky YCH-54A Serial 64-004 Register 64-14202 used by US Army Aviation Army. Built 1963. Aircraft history and location Aircraft History 64-14202 US Army Aviation 1966-08-09Sikorsky S-64A, c/n 64-004, ff? del US Army as YCH-54A 64-14202 w/o South Vietnam, 09Aug66. Send Updates Use APP to upload photo @ (optional) When Now? / / Send