Helicopter Bell UH-1N Serial 31053 Register 69-6647 used by US Air Force USAF. Aircraft history and location Aircraft History 69-6647 US Air Force 1974-08-04 A KSKA w/o asg Fairchild AFB, WA. Hit powerlines at 9 mile falls and crashed into water Send Updates Use APP to upload photo @ (optional) When Now? / / Send