sentences:  The government rejected the proposed transfer of routes from BOAC and BEA to the Second Force, and held that dual designation on a route should be open to any British independent.The new airline established its headquarters and operational base at Gatwick Airport and Sir Adam Thomson, one of the five co-founders as well as one of the main shareholders of Caledonian Airways, became its chairman and managing director.BCal was a full member of the International Air Transport Association (IATA) at its inception as a result of inheriting BUA's membership.