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Damaged AFR 747-400 Yesterday  
User currently offlineFlyAA757 From United States of America, joined Jun 1999, 1008 posts, RR: 0
Posted (15 years 2 weeks 1 day 11 hours ago) and read 1051 times:

Yesterday, July 16, 1999, while in Mexico City(MEX), i observed an Air France B747-428(SCD) F-GISE in a quite unusual situation. The aircraft arrived, and departed with only one winglet!!! It took quite a few doubletakes, and binoculars to confirm my original vision. The left wingtip was simply gone. The hole where it should have been attached was quite evident. THe opposite side was normal. I would think that this would cause asymetrical flight and handeling difficulties, but no attention was paid to the wing during the aircraft's apx 2 hr stay at MEX. Does anyone know what happened, or how this type of incident affects flight characteristics?

4 replies: All unread, jump to last
 
User currently offlineWorldTraveller From Germany, joined Jun 1999, 624 posts, RR: 5
Reply 1, posted (15 years 2 weeks 1 day 8 hours ago) and read 1051 times:

A year ago or so a CX A330 landed at Kai Tak with only one winglet, too. The other one was "lost" inflight.
Appearently, there is no stability problem or anything like that in the very rare occasion when this happens...


User currently offlineCO767-224ER From , joined Dec 1969, posts, RR:
Reply 2, posted (15 years 2 weeks 1 day 8 hours ago) and read 1050 times:

I saw a BA 744 at Houston Intercontinental which had the same problem. I did appear to be a "clean break" however. There was no twisted or damaged metal, and actually it looked as if a mechanic had just removed it from the wingtip.

User currently offlineLH423 From Canada, joined Jul 1999, 6501 posts, RR: 54
Reply 3, posted (15 years 2 weeks 1 day 8 hours ago) and read 1050 times:

May be these are isolated incidents, but it seems this happens too much. I don't know how I'd feel if one minute the winglet was there and the next it was gone.


« On ne voit bien qu'avec le cœur. L'essentiel est invisible pour les yeux » Antoine de Saint-Exupéry
User currently offlineJETPILOT From United States of America, joined May 1999, 3130 posts, RR: 29
Reply 4, posted (15 years 2 weeks 1 day 7 hours ago) and read 1050 times:

Airplanes have something called a CDL (Configuration Deviation List) This is a list of things that can be missing from an aircraft and the penalty in performance that must be taken into account.

For instance on the DC8 if a aileron fiaring is missing all performance calculations must be for a plane that weighs 5000 pounds heavier than it actually is. And fuel burn calculations are inreased 2%.

A winglet is simply an aerodynamic aid and not part of the primary lifting surface. I'm sure a high penalty would be paid to operate the aircraft in such a condition.


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