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MD11 General Overview


The MD-11, the world's only modern large, wide-cabin trijet, offers commercial aviation's most sophisticated flight deck and advanced automatic system controls that provide the lowest pilot workload in the industry. In service with customers in all parts of the world, the MD-11 is produced in Long Beach, Calif., at the Douglas Products Division of the Boeing Commercial Airplane Group. A world-wide network of subcontractors and suppliers supports the assembly line.


The MD-11 is available in four models - passenger, all freighter, convertible freighter and "combi," where passengers and freight are carried on the main deck with additional freight carried below the deck. An extended range (ER) feature is available on all versions. A wide variety of interior configurations is available. Seating capacities on the standard airplane vary from 233 in a three-class arrangement to 410 in an all-economy configuration. Below the main deck, the MD-11 provides more space for containerized or palletized cargo after passenger bags are loaded than any other airliner, yielding important additional revenue for its operators.


Advances in aerodynamics, propulsion, aircraft systems, cockpit avionics and interior design contribute to the performance and operating economy of all MD-11 models. Aerodynamic improvements include winglets and a redesigned wing trailing edge, a smaller horizontal tail with integral fuel tanks and an extended tail cone. These features reduce drag, save fuel and add range.


The nonstop range of the standard MD-11 operating at a maximum takeoff gross weight of 602,555 pounds (273,900 kg) is approximately 7,800 statute miles (12,655 km) with 298 passengers and their bags. The extended range version of the MD-11 equipped with an auxiliary fuel tank and operating at a higher maximum takeoff gross weight of 630,500 pounds (285,990 kg) is approximately 8,300 statute miles (13,355 km).


Three engines -- General Electric CF6-80C2, Pratt & Whitney 4460, and Pratt & Whitney 4462 -- are offered to power the MD-11, providing maximum efficiency in their thrust class.


The MD-11 was launched on Dec. 30, 1986. Assembly of the first unit began March 9, 1988. First flight was on Jan. 10, 1990. Certification occurred Nov. 8, 1990, with first delivery on Dec. 7. For comparison, the MD-11 is 200 feet 10 inches (61.2 m) long, 18.6 feet (5.66 m) longer than the earlier DC-10 trijet, and carries about 50 more passengers.

Interesting Facts

As of June 30, 1997, 166 MD-11s were delivered, and the aircraft was in service with more than 20 operators. The aircraft are serving more than 100 cities in 55 countries with more than 270 scheduled daily flights. The fleet had compiled more than 2.7 million revenue flight hours and 1.3 billion statute miles (2.08 billion kilometers), carrying nearly 70 million passengers.

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