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Broken Flap At Trailing Edge  
User currently offlineflybaurlax From United States of America, joined Oct 2008, 638 posts, RR: 0
Posted (3 years 8 months 2 weeks 14 hours ago) and read 3992 times:

I was deciding whether or not to post this, but I figured you guys are pretty clever and can probably figure out what happened. I flew on WN to go home for Christmas break, going from IND-MDW-LAX. This was on the plane for MDW-LAX. When we took our seats, my girlfriend noticed that there was something different in the trailing edge of one of the flaps, so I looked out and saw something surprising. There were 2 parts that were broken, but I could only get a shot of one. I reassured her that someone would have noticed it on either the FO walkaround or the ground crew walkaround. I hope I was right. Here's the first part: An actual cut in the trailing edge.





There was a section inboard to the damage above on the trailing edge of the wing that was damaged too. It looked like the metal was ruffled, or fringed, however you want to put it. My initial thoughts were that something backed up into the wing and damaged it, but the cut in the flap is so clean I was wondering if maybe that could be a quick fix to cut away the originally damaged section so it wouldn't propagate.

I'd like to know what you guys thing. Thanks


Boilerup! Go Purdue!
10 replies: All unread, jump to last
 
User currently offlineLTC8K6 From United States of America, joined Jun 2009, 1210 posts, RR: 0
Reply 1, posted (3 years 8 months 2 weeks 13 hours ago) and read 3979 times:

http://www.flyertalk.com/forum/conti...-700-small-piece-wing-missing.html

Seems it's not uncommon...

Quote:
Hi NYPDLieu, the part you're referring to is called an "Outboard Aft Flap" and is used to augment lift during take off and landing. The condition noted in your photos is actually an FAA-approved field repair that trims the end as noticed in the pictures. It's not too commonly used, but to be clear, there's nothing to be alarmed about when you see this.


User currently offlineflybaurlax From United States of America, joined Oct 2008, 638 posts, RR: 0
Reply 2, posted (3 years 8 months 2 weeks 12 hours ago) and read 3948 times:

Ok cool thanks. I figured it was a field repair because of the clean cut. I wasn't too worried about it, since it's such a small portion and at the trailing edge like that I wasn't too concerned during low speeds.


Boilerup! Go Purdue!
User currently offlinetdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 79
Reply 3, posted (3 years 8 months 2 weeks 10 hours ago) and read 3898 times:

Quoting flybaurlax (Thread starter):
There was a section inboard to the damage above on the trailing edge of the wing that was damaged too. It looked like the metal was ruffled, or fringed, however you want to put it. My initial thoughts were that something backed up into the wing and damaged it, but the cut in the flap is so clean I was wondering if maybe that could be a quick fix to cut away the originally damaged section so it wouldn't propagate.

The "ruffled metal" sounds like speed tape (a shiny grey aluminum tape with strong adhesive, often mistaken for duct tape by non-aviation folks). Coupled with the temporary repair on the flap, I suspect somebody ran into the trailing edge and they put on some temporary repairs from the Structural Repair Manual to take care of it until they could perform the permanent repair.

The cut from the flap looks like they went into the honeycomb area, routed it clean, then potted and painted the exposed edge.

Tom.


User currently offlineetherealsky From United States of America, joined Apr 2010, 328 posts, RR: 0
Reply 4, posted (3 years 8 months 1 week 6 days 4 hours ago) and read 3566 times:

Is there a time limit on flying with that repair before it needs replacement?


"And that's why you always leave a note..."
User currently offlineb78710 From United Kingdom, joined Mar 2006, 343 posts, RR: 0
Reply 5, posted (3 years 8 months 1 week 6 days 1 hour ago) and read 3531 times:

Thats definately a repair, the radius is perfect and far to clean for it to be fresh damage. Good spot though

User currently offlinetdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 79
Reply 6, posted (3 years 8 months 1 week 6 days ago) and read 3516 times:

Quoting etherealsky (Reply 4):

Is there a time limit on flying with that repair before it needs replacement?

Assuming it was done per the Structural Repair Manual, it's good for 24 months.

Tom.


User currently offlineFly2HMO From , joined Dec 1969, posts, RR:
Reply 7, posted (3 years 8 months 1 week 5 days 14 hours ago) and read 3330 times:

I'm assuming any performance penalty is negligible and they just go by operating the aircraft normally, right?

User currently offlineGoBoeing From United States of America, joined Jun 2000, 2698 posts, RR: 14
Reply 8, posted (3 years 8 months 1 week 5 days 9 hours ago) and read 3270 times:

Quoting Fly2HMO (Reply 7):
I'm assuming any performance penalty is negligible and they just go by operating the aircraft normally, right?

Correct.

Even a missing winglet barely does anything to performance numbers.


User currently offlineAA737-823 From United States of America, joined Mar 2000, 5831 posts, RR: 11
Reply 9, posted (3 years 8 months 1 week 4 days 18 hours ago) and read 3133 times:

Quoting GoBoeing (Reply 8):
Even a missing winglet barely does anything to performance numbers.

A missing flap canoe, however, is a bit bigger hit...


User currently offlinePGNCS From United States of America, joined Apr 2007, 2825 posts, RR: 45
Reply 10, posted (3 years 8 months 1 week 12 hours ago) and read 2820 times:

Quoting GoBoeing (Reply 8):
Quoting Fly2HMO (Reply 7):
I'm assuming any performance penalty is negligible and they just go by operating the aircraft normally, right?

Correct.

Even a missing winglet barely does anything to performance numbers.

Maybe on a 737, but that's far from universally true.


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