The McDonnell Douglas MD-11 is an American tri-jet wide-body airliner manufactured by American manufacturer McDonnell Douglas (MDC) and later by Boeing. Following DC-10 development studies, the MD-11 program was launched on December 30, 1986. Assembly of the first prototype began on March 9, 1988. Its maiden flight occurred on January 10, 1990, and it achieved Federal Aviation Administration (FAA) certification on November 8. The first delivery was to Finnair on December 7 and it entered service on December 20, 1990.

The freight transport aircraft was the second variant on offer at launch in 1986 and was the last and longest (1988-2000) manufactured version. The all-cargo aircraft features the same forward port-side cargo door (140 by 102 inches (3.6 m x 2.6 m)) as the MD-11CF, a main-deck volume of 15,530 cubic feet (440 m3), a maximum payload of 200,151 pounds (90,787 kg) and can transport 26 pallets of the same dimensions (88 by 125 inches (2.2 m x 3.2 m) or 96 by 125 inches (2.4 m x 3.2 m)) as for the MD-11C and MD-11CF. The MD-11F was delivered between 1991 and 2001 to FedEx Express (22), Lufthansa Cargo (14), and other airlines with fewer aircraft.
(Source: Wikipedia)