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  #1  
Old 03-27-2013, 06:32 PM
FitzRX7 FitzRX7 is offline
 
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Location: FL
Posts: 100
Default RV-6 Wing Screws

Hey guys, I'm new here and I'm trying to buy a flying RV-6.

We noticed that there are some screws that seem to be called for in the plans missing from underneath the wings, where they attach to the belly skin of the aircraft.

I've been told various things as to that they are important and that they are not, and I'm just trying to get to the bottom of it.

Thanks!
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  #2  
Old 03-27-2013, 06:42 PM
Sid Lambert Sid Lambert is offline
 
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Location: North Atlanta
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If the wing skin meets the belly flush then I see no reason to put them in. Mostly the screws help make the skin flush. I guess they could flex over time and crack if it is not flush but not really a huge concern.
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  #3  
Old 03-27-2013, 07:09 PM
FitzRX7 FitzRX7 is offline
 
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This is actually where the belly skin overlaps the wing. I'm never built one, but from my rookie level of reading plans it appears like 10-ish screws that go through each belly skin->wing skin->inner wing rib and attach to nutplates mounted in the wing. 20 or so screw/nutplates in total, 10 each side.
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  #4  
Old 03-27-2013, 07:38 PM
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JonJay JonJay is offline
 
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This has come up before, perhaps with the same airplane. They are absolutely structural and required.
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  #5  
Old 03-27-2013, 07:45 PM
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JonJay JonJay is offline
 
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http://www.vansairforce.com/communit...ht=Wing+screws
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  #6  
Old 03-27-2013, 07:45 PM
FitzRX7 FitzRX7 is offline
 
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But I was told that there are no airworthiness directives or service bulletins that exist for this issue. (I'm not really sure what all that means, it's just what I was told)

How long would it take to fix something like this?
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  #7  
Old 03-27-2013, 07:49 PM
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JonJay JonJay is offline
 
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It is not a service or airframe issue, it is a construction issue. Who knows what impact it may or may not have on the strength of the wing. I posted a link to a post about a 7 with the same issue.
The fix would require wing removal, not an easy job. I would be more concerned with what else the builder felt was "unnecessary".
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Last edited by JonJay : 03-27-2013 at 07:52 PM.
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  #8  
Old 03-27-2013, 08:45 PM
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Snowflake Snowflake is offline
 
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Has anyone got any pictures of this? I'm having a hard time visualizing it and I own a -6... But I didn't build mine either. Doesn't the wing root fairing go all the way around? Guess I'll find out again at this year's annual (due in about a week...).
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  #9  
Old 03-27-2013, 08:46 PM
Steve Barnes Steve Barnes is offline
 
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Default Absolutely JonJay

I fully concur and for all the same reasons. If you call Van's and ask them, the answer is, it absolutely is a structural matter.

Steve "The Builders Coach"
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  #10  
Old 03-27-2013, 08:53 PM
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ChiefPilot ChiefPilot is offline
 
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Quote:
Originally Posted by Snowflake View Post
Has anyone got any pictures of this? I'm having a hard time visualizing it and I own a -6... But I didn't build mine either. Doesn't the wing root fairing go all the way around? Guess I'll find out again at this year's annual (due in about a week...).
No, underneath it stops just aft of the tanks.
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