Helicopter Sikorsky UH-60A Black Hawk Serial 70-272 Register 81-23551 used by US Army Aviation Army. Aircraft history and location Aircraft History 81-23551 US Army Aviation 1986-07-12 A EGVPnoted at Middle Wallop International Air Day. 159 MedDet 1995US Army in 1995 236 MedCo. 236 MedCo Send Updates Use APP to upload photo @ (optional) When Now? / / Send