Helicopter Bell AH-1G Cobra Serial 20835 Register 68-17107 used by US Army Aviation Army. Aircraft history and location Aircraft History 68-17107 US Army Aviation US Army 1971-02 1970-1971 Vietnam. Asg D Troop, 3/4 Cavalry, 25th Infantry Division which was renamed F Troop, 4th Cavalry in Feb71 Send Updates Use APP to upload photo @ (optional) When Now? / / Send