A surprisingly small number of airlines flew this Convair over 40 years. It was first delivered to American Airlines as a Convair 240 in August 1948. Sold to Trans Texas Airways in July 1964, the airliner was converted to a Convair 600 in 1967 before the airline name changed to Texas International Airlines. Bar Harbor bought the aircraft in March 1979 and flew it until 1989 when is became a Continental Express commuter. Registered to International Turbine Service in May 1989, it was broken up for parts and the registration cancelled by 1992.