French entrepreneur and business leader, Serge Dassault has died. “Serge Dassault has devoted his life to aeronautics and the French industry. He has defended with passion and determination Dassault Aviation and its employees…” Eric Trappier, Chairman/CEO. A billionaire worth reportedly $26+ billion, he was one of France’s richest men, according to Forbes and Bloomberg. He died Monday after reportedly having a heart attack at Dassault headquarters, according to a report from the BBC.