Helicopter Sikorsky UH-60A Black Hawk Serial 70-278 Register 81-23557 used by US Army Aviation Army. Aircraft history and location Aircraft History 81-23557 US Army Aviation 1983-10-18US Army 9 AVN w/o 18oct83 crash during NVG training flight near Mount Rainier, Washington. 4 fatalities Send Updates Use APP to upload photo @ (optional) When Now? / / Send