Douglas DC-8 
 
Douglas answer to Boeings 707 plans was the DC-8. It first flew in 1958. Both aircraft shared the position of main intercontinental trunk airliner till the Jumbo's became popular.
The stretched variant, the super-60s, gave a second selling-boom in the late 1960s.
Aeromexico DC-8-50
But the DC-8 lacked the late government-orders which kept the 707 line open till the 90s. DC-8 production ended as early as 1972, with 556 built. AeroMexico was an early customer for the DC-8. Unlike most other standard
DC-8 operators, it never operated any stretched 63-series, 
but it continued operating some 50s till 1988.

Surinam Airways was one of the last passenger-operators of the DC-8. 
This '63 was used till 1992 and later operated for Rich International. 

photo: Servaas Verbrugge, Amsterdam 1990 
In the 80s, many DC-8-60s were re-engined with CFM-56 engines. Some 50s, most 60s and all 70s survive, sadly none in passenger- service. Compared to the endangered 707, this survival-rate as freighter might be the true victory of the DC-8 design over it's better- selling rival.
Download this zip-file for Excel (76 kb)

External Links:  Tony Gothard DC8 page |
Douglas DC-9
 
The Douglas DC-9, designed in the early 1960s, is the grandfather of one of the twin-jet families which is still being built. The 'classic' DC-9 was built from 1965 and 1982 with a total of 976. Over 800 of these are still in service, many even with  first-line passenger operators. The DC-9 shows the ability of Douglas-
designs to stretch and shrink to the extreme and still making efficient airliners. The first DC-9-10 had a capacity of about 90, the DC-9-50
photo: Servaas Verbrugge, Hermosillo, 2 April 2002 
Aerocalifornia continues to fly with a fleet of 30-35 year old DC-9s like this DC-9-14
XA-LAC.

Hawaiian Air is flying inter-island routes with DC-9-50s for almost
25 years now. The offbreed Boeing 717 will replace some in the future.

130 passengers, and later MD-80s and MD-90s (separate spreadsheet) could even carry 170 passengers. The 'new' Boeing 717 has the looks and capacity of the most popular DC-9-30 series.
Download this zip-file for Excel (ar 98 kb)
Hawaiian Airlines DC-9-50
DC-10 and MD-11 
 
The Douglas DC-10 first flew in 1970. Hampered with some early design flaws and lots of bad publicity because of some crashes, the DC-10 turned out to be the better seller compared to Lockheeds rivalling Tristar. DC-10 D-ADQO of Condor, in Frankfurt 1997
In the late '80s, Mc Donnell Douglas launched an advanced version, the MD-11. 
photo: Guido Merkelbach, Frankfurt 1997 
Condor used D-ADQO on charter flights in the 80s and early 90s

American Airlines was an earlier operator of the MD-11. Unsatisfied with 
its performance, it is selling its fleet to FedEx to replace it by 777s.

The performance lacked beyond what MDD promised, and airliners switched to more efficient 777s and A-330/340s instead. The final cargo aircraft has now been delivered, the line closed down after 200 units.
Download this zip-file for Excel (ar 98 kb)
external links: The MD-11 resource
 

MD-80/90, Boeing 717 
 
This follow-up of the DC-9, the stretched DC-9-81, later known as the MD-81, made it's first flight in 1979. The MD-80 is actually built in even greater numbers than it's predecessor, with a total of almost 1200. A re-engined follow up, the MD-90, first flew in 1993. Only 121 of the MD-90 are sold.
Early operators like Swissair and Continental start to replace the aircraft with more modern Airbuses and Boeing 737s, production of the MD-90 is ended.
photo: Servaas Verbrugge, Hemosillo, 3 April 002 
This MD-81 N1003Y is part of the growing fleet of older MD-80s of AeroMexico.

Here's the last hope of seeing new MD-aircraft in the 21st Century; the prototype 
Boeing 717 on it's first flight. 

Luckily, Boeing didn't decide to quit with the Douglas- design altogether, and now intensively re-markets the new sub-type MD-95 as the "new" Boeing 717. After a weak start, orders are now coming in steady, so new variants will be made well into the 21st Century. Download the Excel Database-file (122 kb). Boeing 717 prototype on first flight
External Links
International MD-80 forum  | Virtual tour of the MD-80 | Boeings official MD-80/MD-90 siteBoeings official 717 site | Dustin's MD-80 homepageRich's MD-80 homepage | The MD-80 Flightdeck page | The MD-95/Boeing 717 information Center | The Boeing 717 photopage