The 2021 Turkish Air Force Eurocopter AS532 Cougar crash occurred on 4 March 2021, when a Turkish Air Force (TAF) Eurocopter AS532 Cougar, en route to Tatvan District in Bitlis, Turkey, crashed in Bitlis Province. Eleven Turkish servicemen on board were killed in the crash, while two other servicemen survived the crash. Initially, five injured servicemen were hospitalized, though three of them, including Lieutenant General Osman Erbaş, the commander of the 8th Corps, later died of their injuries.