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  #1  
Old 01-31-2014, 09:27 PM
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RV7A Flyer RV7A Flyer is offline
 
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Location: US
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Default SB 14-01-31; RV-6, 7, 8

A new service bulletin came out today for cracks in the HS forward spar:

http://www.vansaircraft.com/pdf/sb014-01-31.pdf

Last edited by RV7A Flyer : 01-31-2014 at 09:41 PM.
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  #2  
Old 01-31-2014, 10:01 PM
rockwoodrv9 rockwoodrv9 is offline
 
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Location: Meridian ID, Aspen CO
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It doesn't say for the 9 models, but I am reading this pretty close and will see if it is looks like it may apply.
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  #3  
Old 01-31-2014, 10:07 PM
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hydroguy2 hydroguy2 is offline
 
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Location: Townsend, Montana
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nine's have a different HS.

I just inspected my tail group last month...didn't see anything, but wonder if I gave it a close enough look.
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  #4  
Old 01-31-2014, 10:13 PM
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Low Pass Low Pass is offline
 
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Clearly this is a -6, -7, -8 thing. And wow...
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  #5  
Old 01-31-2014, 10:13 PM
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kevinh kevinh is offline
 
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Location: San Mateo, CA
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To do the mod looks painful but not horrible - mostly just the limited access for drilling out some of the rivets...
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  #6  
Old 01-31-2014, 10:28 PM
jay.pearlman jay.pearlman is offline
 
Join Date: Jan 2010
Location: Port Angeles WA
Posts: 247
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It would be good to know how many of these cracks have occurred out of the many RV6,7,8 flying. Can we report in this thread the results of inspections as they occur?
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  #7  
Old 01-31-2014, 10:37 PM
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Arie Arie is offline
 
Join Date: Jul 2010
Location: Dubai
Posts: 115
Default New SB

Wow. This SB is not a quick weekend afternoon fix, this seems to be a major deconstruction ,and then try to but it all back together again with very limited access to buck rivets. When I made my relieve notches in the front spar for the bend I made 100% sure that it was completly deburred and rounded at all corners to prevent cracks, just in this area. I am sure that my relieve notches are as smooth as it can be. Do I understand that this SB must be complied with even if there is no cracks, or is this a fix if a crack is detected. Maybe Alan from antisplat can produce a better way of doing this, like his fix for preventing cracks in the vertical stab front spar...
I can just see that to try and remove those rivets will leave a lot of folks with enlarged holes and a messed up HS that will be worse than before the fix.
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  #8  
Old 01-31-2014, 10:45 PM
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kevinh kevinh is offline
 
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From reading the SB, inspecting before further flight and then every annual seems fine. So if you don't have cracks and don't think you'll get them just doing that until a crack (possibly) shows up some year seems like a fine way to go...
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  #9  
Old 01-31-2014, 11:07 PM
eddieseve eddieseve is offline
 
Join Date: Mar 2009
Location: Sydney, Australia
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I'll be inspecting my RV7 tomorrow morning, will post results

Cheers
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  #10  
Old 02-01-2014, 01:19 AM
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Andy Hill Andy Hill is offline
 
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Does anybody know of occurrences of this cracking i.e. who / what / why / when triggered this SB? I have one possible suspicion...
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