McDonnell Douglas DC-10 Twin

The McDonnell Douglas DC-10 Twin was a proposed twin-engine version of the DC-10 wide-body airliner, meant to be lighter, simpler and more fuel-efficient than the three-engine original. Two-engine designs were studied from 1966, and in 1971 a shortened version with two engines was proposed as a competitor to the Airbus A300, the first twin-aisle twinjet. McDonnell Douglas presented the proposal at Long Beach, California, and several European airlines were willing to order it, but on 30 July 1973 the company board decided against going ahead because no US airline had ordered it. Later twin proposals, alone or with a European manufacturer, never went beyond design studies, and development had cost about 250 million US dollars.