MTU Aero Engines AG develops, manufactures, sells, and maintains commercial and military aircraft engines and aero-derivative industrial gas turbines. It operates in Germany, other European countries, North America, Asia, and internationally through two segments: Original Equipment Manufacturing Business and Maintenance, Repair, and Overhaul Business. Its products include commercial engines for wide-body and narrow-body aircraft, regional jets, helicopters, business jets, and turboprops; military engines for fighter jets, helicopters, and transporters; and industrial gas turbines. The company, formerly MTU Aero Engines Holding AG, changed its name to MTU Aero Engines AG in May 2013; it was founded in 1913 and is headquartered in Munich, Germany.