View Full Version : MD-80's:Whats the Difference


parvezq
04-06-2002, 10:31 AM
Looking at my DW Md-81(Swiss), Md-82 (AA) and Md-83 (TWA/AA) models, i cant tell any difference between the models.

are the moulds exactly the same? Is the difference only in the actual plane(s) specs?

maybe i need my eyes checked...

AlphaSigOU
04-06-2002, 12:51 PM
Originally posted by parvezq
Looking at my DW Md-81(Swiss), Md-82 (AA) and Md-83 (TWA/AA) models, i cant tell any difference between the models.

are the moulds exactly the same? Is the difference only in the actual plane(s) specs?

The aircraft are identical in general arrangement; later MD-82s and MD-83s have the revised 'beaver tail' or 'screwdriver' tail cone. Incidentally, the FAA considers the MD-81 -82, -83 and -87 as a DC-9 series (DC-9-81, -82, -83 and -87), since they were introduced prior to the MD-XX designation change.

David Hingtgen
04-06-2002, 05:57 PM
Plenty of MD-81's have the beaver-tail now. The only absolute rule is that ALL -87's and '88's have them.

Cadavre on a stick
04-06-2002, 06:08 PM
I think the MD-88 was the first to be known as an "MD-88" rahter then a "DC-9-88", no? Anyone know why? Is it because the MD-88 is a totally different cockpit then the previous models?

What is the internal difference between an -81, -82, and -83? I know they're the same size and all, so does it have to do with fuel capacity?

ANTHONY F DUVA JR
04-06-2002, 10:05 PM
I know that the flattened aft fuselage improves performance, but it just doesn't look right. The earlier DC-9 tail cone just looks appropriate. Was there not a problem with the traditional DC-9 tail cone at one point, around 1980?

Sentinel Chicken
04-06-2002, 11:03 PM
To straighten out all the MD-80 variants, I think this is how they sort out:

MD-81 - Basic production model carrying 125 to 146 passengers with JT8D engines.
MD-82 - Model with increased power engines for better performance, carries 137-155 passengers. (More due to more powerful engines rather than a physical stretch).
MD-83 - Extended-range version with extra fuel tanks, more poweful engines, and strengthened landing gear.
MD-87 - Extended-range model with shortened fuselage carrying 105 to 130 passengers. Similar revised tailfin to what's on the 717.
MD-88 - Similar to MD-82 but with advanced EFIS cockpit displays and windshear warning system. Also has an revised tailfin similar to the MD-87/717 tailfins.
MD-90 - Further stretch of the MD-80 series, with a passenger capacity of 153-172 as well as all the improvements of the MD-88 and new V2500 engines in fatter nacelles. Comes in 2 flavors which differ in fuel capacity- the MD-90-30 and the MD-90-50. The MD-90-50 if I'm not mistaken was never built.

As far as the screwdriver tail cone (a drag reduction measure), that's been seen on the MD-81 to -83 alternatively with the original "pointy" tail cone. The screwdriver tail I believe is standard on the MD-87, MD-88, MD-90, and obviously the 717/MD-95.

JeffR
04-06-2002, 11:14 PM
Long Beach in da house baby!

smoothjazz
04-06-2002, 11:57 PM
Originally posted by Sentinel Chicken
To straighten out all the MD-80 variants, I think this is how they sort out:

MD-81 - Basic production model carrying 125 to 146 passengers with JT8D engines.
MD-82 - Model with increased power engines for better performance, carries 137-155 passengers. (More due to more powerful engines rather than a physical stretch).
MD-83 - Extended-range version with extra fuel tanks, more poweful engines, and strengthened landing gear.
MD-87 - Extended-range model with shortened fuselage carrying 105 to 130 passengers. Similar revised tailfin to what's on the 717.
MD-88 - Similar to MD-82 but with advanced EFIS cockpit displays and windshear warning system. Also has an revised tailfin similar to the MD-87/717 tailfins.
MD-90 - Further stretch of the MD-80 series, with a passenger capacity of 153-172 as well as all the improvements of the MD-88 and new V2500 engines in fatter nacelles. Comes in 2 flavors which differ in fuel capacity- the MD-90-30 and the MD-90-50. The MD-90-50 if I'm not mistaken was never built.

As far as the screwdriver tail cone (a drag reduction measure), that's been seen on the MD-81 to -83 alternatively with the original "pointy" tail cone. The screwdriver tail I believe is standard on the MD-87, MD-88, MD-90, and obviously the 717/MD-95.

Thanks Doc... Learn something everyday here...:)

N. Eberhard
04-06-2002, 11:58 PM
2 more threads for 10 in a row at the top!

David Hingtgen
04-07-2002, 01:14 AM
If anyone wants, I could about triple Sentinel Chicken's post, with lots of boring, pointless info details, like the exact weight/range/fuel changes between them, as well as the engine's thrust/temp/weight changes. (I've got plenty of info in my 2 main MD-80 books)

But the basic answer is still, unless you rip open the fuselage and engines to look for minor INTERNAL differences, you will never be able to tell 81/82/83/88 apart, even from only 5 feet away.

(The -87 is shorter, with the extended vertical fin, the -90 has the -87's tail on a body longer than the others, and HUGE engines, and we all know the -95/717)

David Hingtgen
04-07-2002, 01:19 AM
Follow-up: anyone know of ANY external clues between them? I mean, if you're *REALLY* close you can tell a 767-200 from a 767-200ER by comparing the potable water tank access hatches, but you pretty much need to be a ramp worker to do that. I'd guess the -88's EFIS cockpit would need increased electrical power, and make something somewhere show up....