Helicopter Sikorsky UH-60A Black Hawk Serial 70-319 Register 81-23597 used by US Army Aviation Army. Aircraft history and location Aircraft History 81-23597 US Army Aviation US Army 1995 159 MedCo. 159 MedDet 2014 A Western ARNG Aviation Training Site at Western Army National Guard Aviation Training Site (WAATS) , AZ ARNG Arizona National Guard 2016-04-01 B 02AZ at Silverbell AHP Send Updates Use APP to upload photo @ (optional) When Now? / / Send