McDonnell Douglas MD-80

McDonnell Douglas MD-80
Name	McDonnell Douglas MD-80
Caption	An American Airlines MD-82
Type	Narrow-body aircraft
National origin	United States
Manufacturer	McDonnell Douglas
First flight	October 18, 1979
Introduction	October 10, 1980 with Swissair
Status	In limited service
Primary user	American Airlines (historical)
Produced	1979–1999
Number built	1,191
Developed from	McDonnell Douglas DC-9
Developed into	McDonnell Douglas MD-90, Boeing 717

McDonnell Douglas MD-80 is a series of twin-engine, single-aisle jet airliners developed by McDonnell Douglas as a lengthened and modernized successor to the DC-9. Introduced in 1980, the series became a mainstay of U.S. domestic and short-haul international routes for carriers like American Airlines and Delta Air Lines. Known for its distinctive T-tail and rear-mounted Pratt & Whitney JT8D engines, the MD-80 was produced for nearly two decades before being succeeded by the McDonnell Douglas MD-90 and, ultimately, the Boeing 717.

Development and design

The program was launched in 1977 as a derivative of the DC-9-50, initially designated the DC-9-80 (Series 80). The primary goals were increased capacity, improved fuel efficiency, and reduced noise compared to earlier DC-9 models. Key design features included a longer fuselage, an updated flight deck with an electronic flight instrument system, and more advanced versions of the Pratt & Whitney JT8D turbofan engine. The first flight of the MD-80 occurred on October 18, 1979, and the type received its Federal Aviation Administration certification in 1980. The design philosophy emphasized commonality with the DC-9 to reduce pilot training costs and maintenance requirements for existing operators.

Operational history

The MD-80 entered commercial service with launch customer Swissair on October 10, 1980. Its major breakthrough came with a massive order from American Airlines in 1983, which became the largest operator and branded its fleet as the "Super 80." The aircraft dominated the United States domestic aviation market throughout the 1980s and 1990s, also seeing significant service with Delta Air Lines, Alitalia, and Scandinavian Airlines. The MD-80 proved popular for its reliability and performance on high-frequency, short-to-medium haul routes. However, by the 2000s, it faced economic pressure from newer, more fuel-efficient aircraft like the Boeing 737 Next Generation and the Airbus A320 family, leading to widespread retirement from major fleets in the 2010s and 2020s.

Variants

The MD-80 family comprises several models offering different ranges and capacities. The baseline MD-81 entered service with Swissair. The MD-82 had more powerful engines and improved hot and high performance, favored by American Airlines. The MD-83 featured increased maximum takeoff weight and additional fuel capacity for longer range. The MD-87 is a shortened fuselage variant with a redesigned tail cone. The MD-88 incorporated a modern glass cockpit and other interior updates, becoming a staple of the Delta Air Lines fleet. Each variant maintained a high degree of commonality to simplify operations for mixed fleets.

Operators

The largest historical operator was American Airlines, which at its peak flew over 300 aircraft. Delta Air Lines also operated a large fleet, primarily of the MD-88 model. Other significant carriers included Alitalia, Scandinavian Airlines, and Finnair. In Europe, Iberia and Austrian Airlines were notable operators. Following retirements from major flag carriers, many aircraft were acquired by charter airlines and carriers in Africa, Latin America, and Asia, such as LASER Airlines of Venezuela. As of the 2020s, only a handful of smaller airlines and cargo operators continue to fly the type.

Accidents and incidents

The MD-80 has been involved in several notable aviation accidents. These include Delta Air Lines Flight 191, which crashed in Dallas in 1985 due to a wind shear microburst, and Scandinavian Airlines Flight 751, which crash-landed in Sweden in 1991 following dual engine failure from icing. American Airlines Flight 1420 overran the runway in Little Rock in 1999 during a severe thunderstorm. A significant incident was Alaska Airlines Flight 261 in 2000, which crashed into the Pacific Ocean due to a failure of the jackscrew in the horizontal stabilizer, leading to important maintenance and inspection reforms by the Federal Aviation Administration.

Specifications (MD-83)

* **Cockpit crew:** Two * **Seating capacity:** 155 (typical two-class) * **Length:** 45.1 m (148 ft) * **Wingspan:** 32.8 m (107 ft 8 in) * **Height:** 9.0 m (29 ft 7 in) * **Max takeoff weight:** 72,575 kg (160,000 lb) * **Powerplant:** 2 × Pratt & Whitney JT8D-219 turbofan engines * **Max speed:** Mach 0.84 * **Range:** 4,635 km (2,880 mi) with full payload * **Service ceiling:** 11,000 m (37,000 ft)

Category:Aircraft Category:Jet airliners