Sabena during this decade. Boeing 727-100s were introduced on important European routes and also some African services from 1967 in a unique colour scheme; the fin markings incorporated bare-metal rudder and white engine colours. The only other aircraft to have its own special markings was the McDonnell Douglas DC-10. At this time Fokker F27 Friendships entered service between regional Belgian airports and European destinations such as London Heathrow. The Boeing 747-100 was introduced in 1971, on transatlantic routes flying alongside the Boeing 707-320Cs. Sabena, like many other trans-Atlantic airlines, was satisfied with the Boeing 707s. For commercial reasons it was recognised
Sabena that it had to buy jumbo jets for its prestige services, notably New York JFK and as of the mid-seventies, Chicago O'Hare. Sabena purchased only two first generation jumbo jets and it continued to fly the 707 into the late 1970s. In 1973, the Boeing 727s on the European network were replaced by Boeing 737-200s. The Douglas DC-10-30 entered service in 1974. In total, Sabena purchased five of these convertible (Passengers and/or freight) combi aircraft wide-body jets. In 1984 Airbus A310s were introduced on routes that had high passenger density. This aircraft type also introduced a modernisation of the 1973