sentences:  To reduce operating costs further, the airline decided to contract out its scheduled operations between Gatwick and Le Touquet to BIA.The reason for replacing BCal's One-Eleven 200 jet aircraft on this route with that airline's Herald turboprops at the beginning of the 1975 summer timetable period was the high price of jet fuel, which had made BCal's own jet aircraft operations uneconomic.Even during this period of severe retrenchment, BCal continued launching scheduled services to new destinations.