McDonnell Douglas DC-9-40/50
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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