twolz2rn
Posts: 385
Joined: Fri Oct 21, 2005 10:03 am

Putting Winglets On A 757

Sat May 27, 2006 3:51 am

How long does it usually take to put winglets on an aircraft? How much extra range does it add? If the airlines get winglets have they also had them ETOPS certified? Lastly, which US airlines have not put winglets on thier aircraft?
 
777STL
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RE: Putting Winglets On A 757

Sat May 27, 2006 3:56 am

For the 757, it takes quite a while, ~21 days for AA on their recent modifications. Reason being, the 757 takes quite a bit of modification to the wings to accomodate the winglets, more so than an aircraft like the 737NG that was specifically designed for them.

AFAIK, AA and CO are the only US operators utilizing winglets. NW, US, UA, DL don't.
PHX based
 
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kc135topboom
Posts: 10997
Joined: Sun Jan 30, 2005 2:26 am

RE: Putting Winglets On A 757

Sat May 27, 2006 3:59 am

The winglets on the B-757 or B-737 reduce drag by about 7%.

Quoting TwoLz2Rn (Thread starter):
If the airlines get winglets have they also had them ETOPS certified?

Winglets would not effect ETOPS certification.
 
EMBQA
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Joined: Sat Oct 25, 2003 3:52 am

RE: Putting Winglets On A 757

Sat May 27, 2006 5:40 am

Quoting KC135TopBoom (Reply 2):
Winglets would not effect ETOPS certification.

Correct. 80% of ETOPS is manuals and procedures... only 20% has to do with the actual aircraft and even then it's mostly items the normal passenger would never see.
"It's not the size of the dog in the fight, but the size of the fight in the dog"
 
JRadier
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Joined: Mon Sep 27, 2004 11:36 pm

RE: Putting Winglets On A 757

Sat May 27, 2006 5:55 am

Quoting 777STL (Reply 1):
more so than an aircraft like the 737NG that was specifically designed for them.

Not completely correct. Allthough all 737NG's (I believe, can someone confirm for -600 and -900 (non-ER) are built with winglet provisions, the first hundred-something (someone got the complete number) NG's we're build without it, and the wingletmodifications on that bird require quite some wing modification. On the newer aircraft it's basically snap-on.
For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and ther
 
B6JFKH81
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Joined: Thu Mar 16, 2006 6:35 am

RE: Putting Winglets On A 757

Sat May 27, 2006 6:23 am

Quoting 777STL (Reply 1):
~21 days for AA on their recent modifications

I wish AA would PAINT the winglets. I was watching the AA 757 with the winglets come in the other day here at JFK, and it is this dull grey color just like the tail. I think they would look great if they were red or blue or had the AA red and blue stripe or something!

Seeing CO's 757 with the winglets, the blue looks really nice.
"If you do not learn from history, you are doomed to repeat it"
 
777STL
Posts: 2770
Joined: Mon Dec 13, 2004 8:22 am

RE: Putting Winglets On A 757

Sat May 27, 2006 12:52 pm

Quoting JRadier (Reply 4):
Not completely correct. Allthough all 737NG's (I believe, can someone confirm for -600 and -900 (non-ER) are built with winglet provisions, the first hundred-something (someone got the complete number) NG's we're build without it, and the wingletmodifications on that bird require quite some wing modification. On the newer aircraft it's basically snap-on.

Split hairs much?
PHX based
 
JRadier
Posts: 3943
Joined: Mon Sep 27, 2004 11:36 pm

RE: Putting Winglets On A 757

Sat May 27, 2006 4:49 pm

Quoting 777STL (Reply 6):
Split hairs much?

come again?
For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and ther
 
ba1978
Posts: 113
Joined: Fri Jan 16, 2004 2:25 am

RE: Putting Winglets On A 757

Sat May 27, 2006 6:35 pm

Quoting B6JFKH81 (Reply 5):
I wish AA would PAINT the winglets.



Quoting B6JFKH81 (Reply 5):
I think they would look great if they were red or blue or had the AA red and blue stripe or something!

They do paint them with the stripes, albeit very small!


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