This was the first version of this aircraft. The passenger option, sometimes referred to the MD-11P was produced from 1988 to 1998. The flap lever between the two pilots could accidentally be dislodged. The aircraft had a problem with its flight control system. New composite materials where used in building the aircraft, these materials are lighter and more durable. The wing lets where added to reduce the fuel consumption which will lower the operating costs, making the aircraft appeal to airlines. The Development of the MD-11 included new technological advances. The MD-11 as an unusual design compared to most wide body aircraft such as the Boeing 747 or the Airbus A330, it has three turbofan engines instead of the usual two or four, one on each wing attached to a pylon and one located through the vertical stabilizer at the rear of the aircraft. This is called an Advanced Common Flight Deck or ACF for shot, unlike its predecessor the DC-10 which had a three crew cockpit with an analogue display and flight engineer located behind the pilots. The MD-11 cockpit included a flat screen glass display, there are six interchangeable units and advanced Honeywell VIA computers which replace the flight engineer making it a two crew cockpit. The MD-11 was developed from the DC-10, the development included changes such as a longer fuselage, new engines, wing lets and the use of composite materials. It was designed and built by McDonnell Douglas and continued by Boeing for three more years after the merger. The McDonnell Douglas MD-11 is a medium to long range wide body jet airliner.
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