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Putting Winglets On A 757  
User currently offlineTwoLz2Rn From United States of America, joined Oct 2005, 452 posts, RR: 0
Posted (8 years 7 months 1 day 8 hours ago) and read 3021 times:

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?

8 replies: All unread, jump to last
 
User currently offline777STL From United States of America, joined Dec 2004, 3768 posts, RR: 3
Reply 1, posted (8 years 7 months 1 day 8 hours ago) and read 3008 times:

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
User currently offlineKC135TopBoom From United States of America, joined Jan 2005, 12181 posts, RR: 51
Reply 2, posted (8 years 7 months 1 day 8 hours ago) and read 3002 times:

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.


User currently offlineEMBQA From United States of America, joined Oct 2003, 9364 posts, RR: 11
Reply 3, posted (8 years 7 months 1 day 6 hours ago) and read 2911 times:

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"
User currently onlineJRadier From Netherlands, joined Sep 2004, 4723 posts, RR: 50
Reply 4, posted (8 years 7 months 1 day 6 hours ago) and read 2886 times:

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
User currently offlineB6JFKH81 From United States of America, joined Mar 2006, 2902 posts, RR: 7
Reply 5, posted (8 years 7 months 1 day 6 hours ago) and read 2838 times:

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"
User currently offline777STL From United States of America, joined Dec 2004, 3768 posts, RR: 3
Reply 6, posted (8 years 7 months 23 hours ago) and read 2688 times:

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
User currently onlineJRadier From Netherlands, joined Sep 2004, 4723 posts, RR: 50
Reply 7, posted (8 years 7 months 19 hours ago) and read 2604 times:

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
User currently offlineBA1978 From United Kingdom, joined Jan 2004, 185 posts, RR: 0
Reply 8, posted (8 years 7 months 17 hours ago) and read 2542 times:

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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