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CRJ-700 “hole” in wing

Posted: Fri Apr 02, 2021 3:23 am
by jetmatt777
I have been meaning to ask about this for about 10 years now and finally remembered. Anyone who has worked a CRJ-700 should know about a “hole” on the bottom side of each wing, just aft of the slats about 10 feet or so from the wing root. It is rectangular and about 4inches wide and 8 inches tall or so. Does anyone know the purpose of this?

I have searched google and the forums here and found nothing. I also don’t have a photo handy.

Re: CRJ-700 “hole” in wing

Posted: Fri Apr 02, 2021 3:27 am
by bradyj23
It was a cover plate on the flaps. If I remember correctly they found the bracket was breaking and causing flap problems. The drag penalty was so small they just removed the plate and never fixed the bracket.

Re: CRJ-700 “hole” in wing

Posted: Fri Apr 02, 2021 3:45 am
by jetmatt777
Interesting. Thanks. Looking at it is so weird, and seems like it would be a pretty bad location for a missing panel. But clearly their engineers know better!

Thanks for the info.

Re: CRJ-700 “hole” in wing

Posted: Fri Apr 02, 2021 4:47 am
by Starlionblue
The bottom of the wing is way less sensitive to flow disturbance compared to the top.

Re: CRJ-700 “hole” in wing

Posted: Fri Apr 02, 2021 6:14 am
by jetmatt777
Starlionblue wrote:
The bottom of the wing is way less sensitive to flow disturbance compared to the top.


True. And I don’t doubt that, but this area in specific is fairly forward facing, so I imagined a larger impact. But again that is well outside my sphere of knowledge.