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ClassicLover
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MD80 / MD90 Questions

Thu Dec 09, 2004 7:16 pm

Alright, I know some smart arse is going to say that I should just look it up on the Internet, but I'd rather hear it from you people.

I am up on my variants with Boeing. I know the difference between each series and subvariants at a pinch. I know most of the Airbus ones.

Can someone explain all the MD80 series to me? I know they're all DC9-80s and things like that, but I don't know the differences betwen MD81, MD83 and so on.

Also, people write on here that there are MD90s - I didn't think that they existed. I thought they were cancelled and turned into the Boeing 717?  Confused

All the other DC/MD products are quite straightforward. This one is not.

HELP!

Trent.
I do quite enjoy a spot of flying - more so when it's not in Economy!
 
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TS-IOR
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RE: MD80 / MD90 Questions

Thu Dec 09, 2004 7:22 pm


Click on the Aircraft Data & History link at Airliners.net homepage and you will understand everything. If somehow you still have another questions, at that time you may ask for them on this thread...

Regards  Big grin
 
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ClassicLover
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RE: MD80 / MD90 Questions

Thu Dec 09, 2004 9:18 pm

*sigh*  Smile

Surely someone can just tell me?

Do I have to beg?

Trent.
I do quite enjoy a spot of flying - more so when it's not in Economy!
 
pilotpip
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RE: MD80 / MD90 Questions

Thu Dec 09, 2004 11:04 pm

You got the part about the MD-80s. I really don't remember all the exact differences though. There are some good books out there with technical data. The differences are similiar to those in the 737 series in regards to range, payload, etc.

The MD-90 does exist. There are a few still with Delta and I believe that some Asian carriers use them. They have V-2500 engines and were designed for greater performance. The airplane was plagued by maintinance problems initially and Delta only ordered a few as a result. Because of this small number, they will more than likely get rid of them soon.

The MD-95 is what is now known as the Boeing 717.

It's what I know, but I don't waste time posting on threads when it comes to the obvious.
DMI
 
mandala499
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RE: MD80 / MD90 Questions

Thu Dec 09, 2004 11:49 pm

MD81 = Basic MD80
MD82 = higher MTOW
MD83 = Even higher MTOW
MD88 = MD82/3 (not sure which one or both).

To keep the performance of the aircraft, there are engine options in terms of which subvariant of the PW JT8D-200 series engine (207, 209, 217,219) etc for the thrust settings that suit the customer's route profile...

Mandala499
When losing situational awareness, pray Cumulus Granitus isn't nearby !
 
ContinentalFan
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RE: MD80 / MD90 Questions

Thu Dec 09, 2004 11:55 pm

MD88 = MD83 with some new systems, most notably a glass cockpit, I think.
MD87 = shrunk MD83 (or was it MD88), about DC9-50 sized
 
MD80Nut
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RE: MD80 / MD90 Questions

Fri Dec 10, 2004 12:02 am

MD81 = Basic MD80, range about 1,900 miles
MD82 = Higher MTOW, range about 2,250 miles
MD83 = Higher MTOW, range about 2,800 miles
MD87 = Shorter version (about the size of a DC-9-30/40) range about 2,250 to 2,800 depending on engine choice, fuel tanks, upgraded "glass cockpit"
MD88 = MD82 with upgraded "glass cockpit" and engine mounts designed so they could be upgraded with then proposed prop-fan engines.

Eventually, older MD80s and newer MD82s and MD83s got glass cockpits.

MD90 = stretch with bigger wing and IAE V-2500 engines in place of JTD-8-200 series engines. Range roughly that of an MD82.

This, in a simplified nutshell, is what the differences are between variants.

Cheers, Ralph

Fly Douglas Jets DC-8 / DC-9 / DC-10 / MD80 / MD11 / MD90 / 717
 
elwood64151
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RE: MD80 / MD90 Questions

Fri Dec 10, 2004 1:19 am

DC-9: Short-medium range, small capacity airliner, designed to carry 60 (-10 series) to 140 (-50 series) passengers. Typical model seats 100-115. Generally flies routes 300-1200 miles

MD-80: Originally the DC-9-80, renamed in 1983. Designed as un up-rated, re-engined version of the DC-9 with new avionics and other technologies. The original model, the MD-81, was launched in 1979. It carried up to 172 passengers (all coach) to a range of approximately 1500 miles. The MD-82 had a higher MTOW and uprated engines. It's higher payload allowed a range of up to 1800 miles. The MD-83 was developed as a response requests by airlines for a longer-range version of the MD-82. With additional fuel cells (and reduced cargo capacity), the MD-83 extended its range to 2200 miles.

The MD-87 was developed to meet the needs of airlines for an aircraft that could carry the same number of passengers as a DC-9-50 but would have increased commonality with the new MD-80s. Few were built but most still fly with various airlines today.

The MD-88 brought the MD-80 into the digital age with digital avionics and other improvements. Basically, it was an improved MD-82.

The MD-90 was the next step from the MD-88. It lengthened the fuselage but MDD did not recommend additional passenger capacity. Designed with a similar EFIS cockpit to the MD-88 and with the MD-80s basic structure and flight characteristics, the pilots need only take a refresher course to re-certify for the MD-90. Additionally, IAE V-2500 engines were installed and range increased again to over 2500 miles. However, the MD-90 suffered intial performance and technical problems, and sales suffered as a result. Many airlines cancelled orders or options. There were two planed variants, the -30 and the -50, which had slightly higher performance capabilities, particularly its range of over 3000 miles.

Essentially, the MD-90 was MDD's answer to the A320 and came out years before the 737NG. Unfortunately, MDD was unable to integrate their previous experience with mechincal/hydraulic aircraft with the new electrical systems and solve problems Airbus had already mastered.

The 717, originally called the MD-95, was a "back to basics" program. Designed not from the MD-90 or the MD-80, the 717 goes back to the original DC-9, guts it, and puts in new avionics, new engines, and several other improvements to the original systems. Again, flight characteristics are similar enough to the DC-9 or MD-80 that only short courses are needed for recertification. Range has been reduced to 1400 nm in the basic version, or 2000 nm in the High Gross Weight variant.

Originally, the MD-95 was to have three variants: The -10, which was to seat 70-90 passengers and was a direct replacement to the DC-9-10; the -30 (now the 717-200), which was to seat 90-110 passengers and was designed as a direct replacement for the DC-9-30; and the -50, which was to seat 110-130 passengers and was designed as a direct replacement to the DC-9-50.

When Boeing and McDonnell Douglas merged, the entire MDD line was heavily scrutinized. The MD-80 and MD-90 were seen as direct competition to the 737, especially the Next Generation variants. These programs were cancelled as a result. The MD-95 was not seen as a competitor to new 737s, except possibly to the -600 which was not designed for short-haul flights; however it was seen as a potential for Boeing to enter into the RJ market, and besides there were fifty firm orders from ValuJet (now AirTran) and several more from other airlines.

The program was re-designated the 717 (which had been the product code for the KC-135) and additional engineering was done in collaboration between Boeing and MDD engineers. Only the -30 series was built, and it was given the Boeing series number of -200. The -10, if built, would have been the -100, and the -50 would have become the -300.



Hope this helps.

It's what I know, but I don't waste time posting on threads when it comes to the obvious.

What a nice way to put it... You had to learn from somewhere, didn't you?

[Edited 2004-12-09 17:21:35]
Those who fail to learn history are doomed to repeat it in summer school.
 
Dalmd88
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RE: MD80 / MD90 Questions

Fri Dec 10, 2004 1:35 am

All MD80 and MD90 share the same wing. It is larger than the DC9-10 and DC9-20/30/40/50, B717 wings. The 90 does have a larger vertical that it shares with the 717.
 
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ClassicLover
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RE: MD80 / MD90 Questions

Fri Dec 10, 2004 3:04 pm

Thanks very much for the information, everyone!

It's really appreciated. I'm now gonna have to read and re-read until it's burned into my brain for easy recall!

Cheers,

Trent.
I do quite enjoy a spot of flying - more so when it's not in Economy!
 
DeltaGuy
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RE: MD80 / MD90 Questions

Fri Dec 10, 2004 4:19 pm

Ride on a DL MD-90 sometime, DFW and SLC has pleanty of them...you'll be amazed at how friggin quiet they are....very nice ride too, wish MDD had made more of them. At one time, that was DL's plan for it's main domestic plane...till that pancaked, and the 738 came out and looked alot better shortly after.

DeltaGuy
"The cockpit, what is it?" "It's the little room in the front of the plane where the pilot sits, but that's not importan
 
ILSApproach
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RE: MD80 / MD90 Questions

Fri Dec 10, 2004 7:28 pm

My favorite MD is the 87..............they sure look like little hotrods!


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