AWspicious
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Tail End Topic

Mon May 06, 2002 2:32 am

While reading another thread I noticed two different tail ends on the same aircraft.

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Photo © Jonathan Derden
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Photo © Chris Sheldon


Since this is something I've never considered before, can anyone explain what could have been some of the reasons for the switch?

aw
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sushka
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RE: Tail End Topic

Mon May 06, 2002 2:34 am

just a guess, but maybe it has something to do with a new APU??
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sushka
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RE: Tail End Topic

Mon May 06, 2002 2:38 am

Actualy after I enlarged the pix I see that there are no APUs  Confused
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ba777-236
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RE: Tail End Topic

Mon May 06, 2002 2:52 am

Maybe MD (Boeing) changed it for aerodynamics reasons ie. more fuel efficent....
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ZRH
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RE: Tail End Topic

Mon May 06, 2002 3:01 am

The flat "beaver tail" is newer. It is aerodynamicly better. MDC put it first on the MD 87 and later on the newer versions of the MD 81-83. You can see the same difference between the DC 10 and MD 11. BTW the APU outlet of the MD 80s is not there, but higher up.
 
AWspicious
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RE: Tail End Topic

Mon May 06, 2002 3:05 am

Isn't that the APU outlet just ahead of, and slightly lower than the letter 'N', on the left side? There seems to be soot discolouration from hot exhaust there.
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AWspicious
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RE: Tail End Topic

Mon May 06, 2002 3:10 am

ZRH;
What you say dosen't add up because, the flat "beaver" tail is in an older pic than the round cone shaped tail. So, it would seem the cone tail has replaced the flat tail. Follow the links for other pics of the same aircraft. Use the reg# as your search topic.
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BWIrwy4
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RE: Tail End Topic

Mon May 06, 2002 3:18 am

AWspicious:
The beaver tail is newer than the cone. Try looking at pictures of the 717 versus the DC9 and you'll see. On N289AA, maybe the beaver tail was damaged somehow, and it was replaced with a cone that was already in inventory.
 
AWspicious
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RE: Tail End Topic

Mon May 06, 2002 3:26 am

Ahhhhhhh.....
Okay. Thanks to all who replied.

aw
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ZRH
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RE: Tail End Topic

Mon May 06, 2002 3:30 am

The cone shaped tail is definitly older, these are the older aircrafts. I know it because Swissair had first aircrafts with cone shaped tails and later newer with beaver tails. The first beaver tail was on the first MD 87. About the APU you are right I told it wrong.
 
atlamt
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RE: Tail End Topic

Mon May 06, 2002 7:47 am

The outlet you see below and forward of the N number is acutall an exhaust for the heat exchangers/packs. The apu exhaust is on the right side of the fuselage just forward of the right side pack exhaust.


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Photo © AirNikon


If you look on the right side just below the pack exhaust you can see the apu exhaust sticking out from the fuselage. Also note the amount of soot on the engine from the apu exhaust.
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redngold
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RE: Tail End Topic

Mon May 06, 2002 11:29 am

and make sure you're comparing MD-80s to MD-80s and not to Fokker 100s.

redngold
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