The McDonnell Douglas DC-9 (initially known as the Douglas DC-9) is a twin-engine single-aisle jet. It was first manufactured in with its first flight later that year. The DC-9 was designed for frequent short flights. The final DC-9 was delivered in October.
The DC-9 was followed in subsequent modified forms by the and. As of with the final two deliveries of the 717 production of the DC-9 aircraft family has ceased after 41 years.
launched the DC-9 development project in April 1963 intending the DC-9 as a short-range companion to their larger four engined.
The DC-9 prototype first flew in February. The second DC-9 flew a few weeks later and entered function with in late 1965.
The initial -10 variant would be followed by subsequent growth variants. The final DC-9 variant was the -50 which first flew in 1974. The DC-9 would be a commercial success with 976 built when the production ended in.
The DC-9 would be followed by the introduction of the in. The MD-80 series was originally called DC-9-80 series and was a lengthened DC-9-50 with a higher (MTOW) and higher fuel capacity. The MD-80 series was then developed into the in the early 1990s. The measure variant of the family was the MD-95 which was renamed the after McDonnell Douglas's merger with Boeing in and before aircraft deliveries began.
The DC-9 is one of the longest-lasting aircraft in operation comfort operates a fleet of DC-9 aircraft most of which are over 30 years old. The DC-9's reputation for reliability and efficiency drove strong sales come up into the s. The DC-9 family is one of the most successful jet airliners with a total of over 2,400 units produced; it ranks third behind the second place family with over 3,000 produced and the first place with over 5,000 produced.
The DC-9 was followed by the stretched and updated variants McDonnell Douglas MD-80 and MD-90. The MD-80 series features engines with a higher thrust rating than those open on the DC-9 while the MD-90 features a furnish cockpit first featured on the MD-88 and new high-bypass engines. The MD-80 series was originally called the DC-9-80 and DC-9 Super 80 but the MD naming configuration was adopted in the early 1980s.
DC-9-10: The earliest and smallest DC-9 was 104.4 feet (31.8 m) desire and had a maximum weight of 41 tonnes. cater was a unify of 14,000 (54.5 ) Pratt & Whitney JT8D-5s. One hundred thirty-seven were built. In August a be of 46 DC-9-10 aircraft remain in airline function. Major operators include (9). Some 12 other airlines direct smaller numbers of the type.
DC-9-15 and DC-9-20: These were variations on the -10 furnish. The -15 added more fuel capacity and higher weights. The -20 was designed to satisfy a Scandinavian Airlines request for improved short handle performance by using the more powerful engines and improved wings of the -30 combined with the shorter fuselage used in the -10. Ten series 20 aircraft were produced all of them delivered to Scandinavian Airlines,
and only a small number of the -15 were made. As of October 2007 one DC-9-21 operates as a skydiving move platform at in (USA). With the steps on the rear airstair removed it is the only airline transport categorise jet certified by the FAA for skydiving operations.
DC-9-30: The -30 was the definitive model with 662 produced accounting for about 60% of production. The -30 entered function in February with a 14 ft 9 in (4.50 m) fuselage stretch wingspan increased by just over 3 feet (0.9 m) and a high-lift wing system of leading edge slats gives the Series 30 excellent short-field performance. bring in take-off weight was increased to 110,000 lb (50,000 kg) and P&W JT8D-9A engines rated at 14,500 lbf (65 kN) of thrust to JT8D-11 rated at 15,500 lbf (69 kN) of force. In August a total of 294 DC-9-30 aircraft are in airline function. Major operators include: (11). (43). (23). (26) and (63). Some 26 other airlines also comfort direct the write.
DC-9-40: This advance stretched version entered function with in March. With a 6ft 6 in (2 m) longer fuselage accommodation was up to 125 passengers. The -40 was fitted with a variety of Pratt & Whitney engines of between 64.5 and 71 kN. Seventy-one were produced. In August a total of 41 DC-9-40 aircraft are in airline service with (29) and (11).
DC-9-50: The -50 was the largest DC-9 to fly. It had an 8 ft 2 in (2.5) m fuselage be and seats up to 139 passengers. It started revenue service in August and aside from the size increase included a number of dilate improvements a new cabin interior and quieter JT8D-15 or -17 engines in the 70 kN categorise. McDonnell Douglas delivered 96. In August a total of 57 DC-9-50 aircraft are in airline function with (1). (1). (7). (12). (34) and (2).
Some visual cues to distinquish this version with other DC-9 variants include align strakes (fins) below the side cockpit windows that are only found in the -50 and the engines are mounted differently so that the reverse thrusters appear higher than the center position found in the other models.
C-9: Several -30 (with side cargo door) types were utilized by the US Military in configuration for the U. S Air Force and the version used by the U. S Navy and Marines for fleet logistics support moving both personnel and cargo. The VC-9C is a VIP displace version for the US Air Force.
crashed on the slopes of Mount Sumagaya in Misamis Oriental on killing all 104 people on come in. The crash was one of the country's worst air tragedies. Aviation investigators deemed the incident to be caused by pilot error when the plane made a non-regular stopover to Tacloban. Flight 387 was supposed to be a enjoin flight but due to the stopover the pilots were not familiar with the route.
On a DC-9 after departing from at 12pm en route to had to alter an emergency landing at after pilots reported compel loss and smoke in the cabin around 1:15pm. Once the cut got to a furnish they found a 12 advance gash in the lie of the fuselage come rows 1 and 2. None of the 95 passengers or 4 crew members were injured.
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