Helicopter Sikorsky UH-60A Black Hawk Serial 70-763 Register 84-23938 used by US Army Aviation Army. Aircraft history and location By Chris Kennedy Aircraft History 84-23938 US Army Aviation 2013-04-12 A KDVTUS Army as 542nd MedCo /838 at Phoenix Deer Valley, AZ Arizona National Guard Send Updates Use APP to upload photo @ (optional) When Now? / / Send