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 Airline History Museum was being renamed the National Airline History Museum. This name change allowed it to be better positioned to receive Federal grants and other national funding. The museum announced in March, 2011 that it had teamed up with Kansas City's Roasterie Coffee Shop, with the Roasterie brand being known as "The Official Coffee of the National Airline History Museum" and carrying an image of the museum's DC-3 on its coffee products. The museum maintains five aircraft at the site; two are in flying condition and one is undergoing restoration. An additional corporate mock-up is also on display. There were only 103