In 1979, the airline took delivery of its delayed third and fourth McDonnell Douglas DC-10-30 widebodied aircraft during the first and third quarter. This permitted the aircraft's introduction on its daily Gatwick—Houston schedule as well as the replacement of the remaining 707-operated services on its mid- and South Atlantic routes. The narrow-bodied capacity released was used to add frequencies on existing routes as well as to launch services to new medium- and long-haul destinations. As a result, BCal launched a fourth weekly service to Brazil. It also launched a new route to Oran and added Quito and Guayaquil to the mid-Atlantic schedule. The company furthermore increased frequencies on its short-haul routes. A fourth daily round-trip was added to both Gatwick—Manchester and Gatwick—Brussels. A third daily frequency operating on week days was added to the Newcastle—Amsterdam sector of BCal's Glasgow—Newcastle—Amsterdam regional route.