A long-range model and the most common model produced. It was built with General Electric CF6-50 turbofan engines, with larger fuel tanks to increase range and fuel efficiency, and with a set of rear center landing gear to support the increased weight. It was very popular with European flag carriers. A total of 163 were built from 1972 to 1988 and delivered to 38 different customers. The model was first delivered to KLM and Swissair on November 21, 1972 and first introduced in service on December 15, 1972 by the latter.