Helicopter Sikorsky HH-60M Black Hawk Serial Register 13-20594 used by US Army Aviation Army. Aircraft history and location Aircraft History 13-20594 US Army Aviation 2019-11-17 A PHHIUS Army 20594 asg 25th CAB at Wheeler, Hawaii during medevac training at Pohakuloa Training Area 25th CAB Send Updates Use APP to upload photo @ (optional) When Now? / / Send