British Airways Engineering was formed from the merger of the engineering divisions of BOAC and BEA's when the two airlines merged in 1974 to form British Airways. Today, British Airways Engineering has hangars at Heathrow (its base), Gatwick, Glasgow and Cardiff airports as well as hundreds of line maintenance stations (engineers located around the world to do minor 'line' maintenance such as routine daily inspections or minor repairs). A team of about 30 engineers are still based at MAN earning revenue from various other airlines. It also consists of the Avionic division which is based at Pontyclun, South Wales, which services the majority of the removable avionic units, and some mechanical components.