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  #1  
Old 12-10-2012, 09:06 PM
Stalldog Stalldog is offline
 
Join Date: Oct 2011
Location: Kansas
Posts: 337
Default Need Advice -- Drilled into Spar

Need some help. While match drilling the root rib to the tank baffle, my drill stop slipped and I drilled into the spar a good 1/16" (see picture - a little hard to see, but follow the arrow).

Besides drop kicking myself into the next county for letting this happen, any ideas how I can salvage this?

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Lenexa, KS

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  #2  
Old 12-10-2012, 09:18 PM
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Vlad Vlad is offline
 
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Lightening hole Fill with primer and move on. Be careful next time.
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  #3  
Old 12-10-2012, 09:36 PM
Stalldog Stalldog is offline
 
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Quote:
Originally Posted by Vlad View Post
Lightening hole
Vlad, interesting concept -- maybe I should add more?

Prime and move on is an answer I REALLY like, but it almost seems too easy. Is there anything I should do to dress it up, although that would require removing more material?
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  #4  
Old 12-10-2012, 09:40 PM
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Greg Arehart Greg Arehart is offline
 
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Location: Delta, CO/Atlin, BC
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Default

Wouldn't hurt to debur it a bit, but I would also confirm with the factory that it is ok to have that extra lightening hole. Might also want to put one on the other side so the airplane stays balanced.

Greg
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  #5  
Old 12-10-2012, 09:42 PM
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Sparky Sparky is offline
 
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Default Ask VANs

Contact Vans to get their opinion. It's the only way you will feel comfortable with the result. I suspect they will tell you to dress up the hole a little and move on.
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  #6  
Old 12-10-2012, 09:42 PM
g zero g zero is offline
 
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Location: palm coast fl.
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Default Spar hole

Spar hole or spare hole , prime and go , there will be more errors along the way.
Another thread is on build quality , no such thing as perfect , just the one with the least errors .
Tom
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  #7  
Old 12-10-2012, 09:59 PM
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Walt Walt is offline
 
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There is no question that you should supply Van's with the specific details like location, diameter and depth of defect, then let them work the issue.

Dare I say that the wing spar is one of the more critical structures, defects should not be covered up and ignored (taking a pole on VAF does not make it 'OK").

The correct way is to confess your sins and let the smart folks at Van's that know stuff (and get paid to figure this stuff out) tell you if it's ok or not. Then you take that documention from Van's and put it with your records.
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Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 2000+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154

Last edited by Walt : 12-10-2012 at 10:02 PM.
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  #8  
Old 12-10-2012, 10:01 PM
Stalldog Stalldog is offline
 
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Location: Kansas
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Note and picture have been sent to Vans. I'll post to let you know what they say.

Thanks to everyone for the feedback -- I'll sleep better tonight.

In the meantime, I'm coming up with a better drill stop.
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  #9  
Old 12-10-2012, 10:07 PM
Stalldog Stalldog is offline
 
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Quote:
Originally Posted by Walt View Post
. . . . Then you take that documention from Van's and put it with your records.
Excellent point, Walt, will do just that. So far I've saved all the e-mails and responses from Vans but haven't printed them out, so I'll go ahead and print off the responses and keep with my records.
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  #10  
Old 12-10-2012, 10:36 PM
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Walt Walt is offline
 
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Documenting defects along with the engineering "fix" and including them in the aircraft records is SOP in the "certified" world. Should this area ever be opened up and this "issue" discovered, its nice to have the paperwork to show that its already been addressed and approved. It also goes along way in showing builder integrity on dealing with defects which are going to happen. As we used to say the job isn't done until the paperwork weights more that the aircraft.
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Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 2000+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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