Sabena airliners which were augmented and later replaced by Douglas DC-6Bs. The DC-4s also restarted the airline's traditional route to the Belgian Congo. Sabena was the first airline to introduce transatlantic schedules from the north of England, when one of its DC-6Bs inaugurated the Brussels-Manchester-New York route on 28 October 1953. The Convair 240 was introduced in 1949 to partially replace the DC-3s that until then had flown most European services. As of 1956, improved Convair 440 "Metropolitan" twins began replacing the Convair 240 twins and were used successfully well into the 1960s between European regional destinations. In 1957, the long-range
National Airlines (1983) Airlines from Pan American World Airways in anticipation of scheduled New York to Paris service. The scheduled service never materialized, although flights on the route were flown as charters. The company faced financial problems and by December 1985 it ceased operations, filing for bankruptcy in May 1986. National Airlines (1983) The second American airline to be named National Airlines was owned by United Air Carriers. It operated from 1977 to 1986. The airline was created when officials of supplemental airline Overseas National Airways formed a FAR Part 129 leasing company known as United Air Carriers on July 21, 1977. When