Helicopter Sikorsky UH-60A Black Hawk Serial 70-313 Register 81-23591 used by US Army Aviation Army. Aircraft history and location Aircraft History 81-23591 US Army Aviation 1983-06-12 A EDSBUS Army E/501st AvnBn. at Solingen air day. 1997 B KNGPUS Army CCAD CCAD Send Updates Use APP to upload photo @ (optional) When Now? / / Send