Transport Aérien Transrégional was a French regional airline with its head office on the grounds of Tours Val de Loire Airport in Tours. It was formed in 1968 as Touraine Air Transport (TAT) by M. Marchais. Air France acquired a minority stake in the airline in 1989. Between 1993 and 1996 the company was gradually taken over by British Airways. It subsequently merged with Air Liberté.