McDonnell Douglas DC-9-40/50
- CountryUnited States of America
- TypeShort to medium range airliners
- Powerplants40 - Two 64.5kN (14,500lb) Pratt & Whitney JT8D-9 turbofans, or two 66.7kN (15,000lb) JT8D-11, or two 69.0kN (15,500lb) JT8D-15s, or two 71.2kN (16,000lb) JT8D-17s. 50 - Two 69.0kN (15,500lb) JT8D-15s, or two 71.2kN (16,000lb) JT8D-17s.
- Performance40 - Max cruising speed 898km/h (485kt), long range cruising speed 820km/h (443kt). Range at high speed cruise with 70 passengers and reserves 1725km (930nm), range with 87 passengers and reserves at long range cruising speed 2880km (1555nm). 50 - Speeds same except for max speed 926km/h (500kt). Range at long range cruising speed with 97 passengers and reserves 3325km (1795nm).
- Weights40 - Empty 26,612kg (58,670lb), max takeoff 54,885kg (121,000lb). 50 - Empty 28,068kg (61,880lb), max takeoff 54,885kg (121,000lb).
- Dimentions40 - Wing span 28.47m (93ft 5in), length 38.28m (125ft 7in), height 8.53m (28ft 0in). Wing area 93.0m2 (1000.7sq ft). 50 - Same except for length 40.72m (133ft 7in).
- CapacityFlightcrew of two. 40 - Seating for up to 125 passengers at five abreast. 50 - Seating up to 139 passengers at five abreast and 79cm (31in) pitch.
- ProductionTotal DC-9 production of 976, including 71 Series 40s and 96 Series 50s. Approximately 53 -40s and 46 -50s remained in service in late 2002.
The DC-9-40 and DC-9-50 are extended advancements of the DC-9-30 and ancestors to the later further stretched MD-80 and MD-90 arrangement.
The DC-9-40 was created because of a Scandinavian Airlines System (SAS) necessity for a bigger limit improvement of the DC-9. Contrasted and the DC-9-30, the DC-9-40 is 1.88m (6ft 2in) more drawn out, bringing seating limit up in a solitary class design to 125. Separated from the fuselage extend and all the more compelling motor choices, the -40 was the much the same as the -30. To start with flight happened on November 28 1967, and the -40 entered administration with SAS on March 12 the accompanying year.
The DC-9-50 is the biggest part of the DC-9/MD-80/MD-90/717 family to shoulder the DC-9 assignment. Propelled in mid 1973, the DC-9-50 is a further 2.44m (8ft 0in) more extended than the DC-9-40, or 4.34m (14ft 3in) more drawn out than the DC-9-30, and has greatest seating for 139 travelers. Conveyed from August 1975, the DC-9-50 presented another look lodge inner part intended to make more proficient utilization of the space accessible and give the impression of a more roomy inside, in addition to other enhanced gimmicks, for example, an enhanced against slip slowing mechanism and quieter motors contrasted and the DC-9-40.
The DC-9-40 and -50 sold just in reasonably humble numbers before the landing of the further extended MD-80 arrangement. The biggest DC-9-40 client was SAS, while Northwest keeps on operaing a vast armada of DC-9-40s and -50s (it is at present the biggest DC-9 administrator on the planet).
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