Helicopter Bell AH-1S Cobra Serial 22222 Register N345WN 78-23116 used by US Forest Service USFS ,US Army Aviation Army. Aircraft history and location Aircraft History 78-23116 US Army Aviation US Army conv to AH-1F For N345WN see also uh-1h 13328 N345WN US Forest Service State of Washington / USFS Jul03-Apr11 scr Send Updates Use APP to upload photo @ (optional) When Now? / / Send