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The MD-80 series, the first derivative or the second generation of the DC-9 family, entered service in 1980.The aircraft series was originally designated as Series 80 or stylized as the Super 80, [5] which was a 14 ft 3 in (4.34 m) lengthened Series 50 with a higher maximum take-off weight (MTOW) and higher fuel capacity, as well as next-generation Pratt and Whitney JT8D-200 series engines and ...
[citation needed] At the time, Delta had over 200 DC-9, MD-88, and MD-90 aircraft from McDonnell Douglas in its fleet. [citation needed] Replacing these older aircraft was a top priority for Delta. [citation needed] For its narrow-body fleet, Delta acquired 277 aircraft from the Airbus A321 series and 119 aircraft from the Airbus A220 series.
The MD-90 was developed from the MD-80 series and is a 5-foot-longer (1.5 m), updated version of the MD-88 with a similar electronic flight instrument system (EFIS) (glass cockpit), and improved, and quieter IAE V2500 high-bypass turbofan engines. The MD-90 program began in 1989, first flew in 1993, and entered commercial service in 1995.
The Series 10 aircraft are 104 ft (32 m) long for typically 90 coach seats. The Series 30, stretched by 15 ft (4.5 m) to seat 115 in economy, has a larger wing and more powerful engines for a higher maximum takeoff weight (MTOW); it first flew in August 1966 and entered service in February 1967. The Series 20 has the Series 10 fuselage, more ...
Seating up to 117 passengers, the DC-9-90 was to be equipped with the DC-9's wing with 2 ft (0.61 m) tip extensions, rather than the more heavily modified increased area of the MD-80. The aircraft had a design range of 1,430 nmi (2,648 km; 1,646 mi), with an option to increase to 2,060 nmi (3,815 km; 2,371 mi), and a gross weight of 112,000 lb ...
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The MD-90 was a stretched version of the MD-80, [48] powered by International Aero Engines V2500 turbofans, the largest rear-mounted engines ever used on a commercial jet. The MD-95 , a modern regional airliner closely resembling the DC-9-30, was the last McDonnell Douglas designed commercial jet to be produced.
U.S. based start-up air carrier Pro Air ordered the MD-90 but did not operate the aircraft prior to ceasing operations and going out of business. [citation needed] Alaska Airlines considered ordering the MD-90 but did not take delivery of the type or operate the aircraft and none were manufactured for the airline. [citation needed]