Helicopter Bell 209 AH-1 Cobra Serial 21122 Register 71-21051 used by US Army Aviation Army. Aircraft history and location Aircraft History 71-21051 US Army Aviation Bell AH-1G Cobra US Armywfu 2008 A RKSGGate Guardian at Camp Humphreys, ROK by Send Updates Use APP to upload photo @ (optional) When Now? / / Send