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
Airline complaints Airline complaints Airline complaints are any type of formal complaint filed by an airline customer either to the airline responsible for the grievance or the government office responsible for overseeing the airlines national industry. Airline complaints generally arise out of problems experienced during air travel that were left unresolved. According to the Airline Quality Rating 2007 report, airline hassles in the United States have increased since 2005. The rate of complaints, on the other hand, have remained roughly the same, with 0.88 complaints per 100,000, half of which were due to problems with flights or baggage. This may be due