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Rakes For The Other 767s & 777s?  
User currently offlineConcordeBoy From , joined Dec 1969, posts, RR:
Posted (12 years 1 month 6 hours ago) and read 2258 times:

I've been able to ascertain very little external information about this... was wondering if anyone here might be in the know:

Are raked winglets offered/certified/certifiable on the 762(ER), 763(ER), 772A, 772ER, 773A... particularly as a retrofit?

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Any carrier expressed interest?

4 replies: All unread, jump to last
User currently offlineDeltaMD11 From United States of America, joined Dec 2002, 1709 posts, RR: 30
Reply 1, posted (12 years 1 month 6 hours ago) and read 2206 times:

As far as I know, other than the 767-400ER, 777-200LR, and the 777-300ER raked wingtips have not been offered for the other variants. The reason behind this being that those aircraft you mentioned above (762, 763, 772/ER) already fit and/or have surpassed their design specifications, and are still very economical to operate within their respective operating markets. Does this mean that we won't see them in the future? Of course the possibilities are endless so I don't see any reason why not if someone really wanted to. The market for winglets on the 757 is going to grow, and the benefits are going to be innumerable so says the people at Continental. I would expect to see a large market for 757 winglet retrofits in the coming years. As far as the 767 is concerned, production is slowly winding down on that line too, and it is starting to become one of the more-seasoned airframes still in production along with it's sidekick the 757. Would Boeing want to spend the money field-testing and getting raked wingtips certified for the 767-200 and -300 lines? I would say the chances are slim. As for actual field studies on the viability on raked wintips on the aforementioned models, I have not read about anything of the like (but then again that does not go to say that it doesn't exist). Just my two cents in the piss pot.

Too often we ... enjoy the comfort of opinion without the discomfort of thought. - John Fitzgerald Kennedy
User currently offlineDfwRevolution From United States of America, joined Jan 2010, 1227 posts, RR: 51
Reply 2, posted (12 years 1 month 6 hours ago) and read 2183 times:

Each raked wingtip on the 764 is approx. 7 feet long, stretching total wingspan to 170 feet from 156. Could this limit the manuvering space for 762/763s at some airports?  Confused

User currently offlinePhollingsworth From United Kingdom, joined Mar 2004, 825 posts, RR: 4
Reply 3, posted (12 years 1 month 6 hours ago) and read 2150 times:

Each raked wingtip on the 764 is approx. 7 feet long, stretching total wingspan to 170 feet from 156. Could this limit the manuvering space for 762/763s at some airports?

Absolutely, I think there are several gates at ATL where the 767-400 cannot park. This is similar to the MD-11, for which the winglets eliminated a number of ATL gates, which the 767, L1011, and had DL had them at the time , the DC-10 could have used.

User currently offlineATA L1011 From United States of America, joined Feb 2001, 1456 posts, RR: 6
Reply 4, posted (12 years 1 month 5 hours ago) and read 2110 times:

Well I heard that the 170Ft span of the 764 posed no problems and that it fit at gates that handled the 165ft wingspan DC-10-30 and 164 FT wing span Tristar-500 and 169 ft Wingspan MD-11 without problem.

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