New SB issued 6 May 2016 (SB16-03-28)

[Plummit]

Originally Posted by rvbuilder2002

Rob,


That, on top of the fact that this location should be inspected at each condition inspection, regardless of whether a SB was issued or not.


On the other subject of inspections and whether people do a good job......?

I think many do, but I also think many don't.

Gosh, the SB has us RV-10 owners/builders trimming the aileron gap fairing in order to inspect the hinge bracket sides. It could be argued that prior to this SB, no one did a good inspection if they didn't trim the fairing....

Don't get me wrong, I think that Vans does a fantastic job, but I also feel that more guidance on performing inspections is a good thing!

As a non-builder, I sure want to be able to inspect my aircraft for airworthiness, even if I can't sign it off.

regards

-Marc

[RV7A Flyer]

Q: if this is caused by air loads (the cracks on the rear main wing spar), what about the *outboard* brackets? I don't normally remove the wingtips during an inspection, because there's really nothing to inspect there, but now...?

[rvbuilder2002]

Originally Posted by Plummit

Gosh, the SB has us RV-10 owners/builders trimming the aileron gap fairing in order to inspect the hinge bracket sides. It could be argued that prior to this SB, no one did a good inspection if they didn't trim the fairing....

Don't get me wrong, I think that Vans does a fantastic job, but I also feel that more guidance on performing inspections is a good thing!

As a non-builder, I sure want to be able to inspect my aircraft for airworthiness, even if I can't sign it off.

regards

-Marc

All my comments in this thread are generalized.
The RV-10 is a special case with the bracket inspection. None have ever been found cracked but in the process of doing the FEA it was found to be possible. Hense the inspection recommendation. You can argue what ever you want ( it kind of sounds like you want to), but all I said was that people should be inspecting places that are visible.
As for vans providing guidance on inspecting? I am not sure what you are looking for. Vans doesn't teach how to build the airplanes via a text manual so not sure how to step into teaching how to inspect them via a text manual.

As of today it looks like we firmed up a plan for an OSH forum on the subject so stay tuned for more info.

Until then, here is some food for thought.......
One of the biggest differences between a builder and an A&P doing a condition inspection is that the mental tendency of a builder is that they don't expect to find anything wrong (we believe we did everything perfectly), where as the A&P does expect to find something wrong.
Point is, doing a good job on an inspection is as much attitude and frame of mind as it is anything.
More later.....

[rleffler]

Originally Posted by rvbuilder2002

The RV-10 is a special case with the bracket inspection. None have ever been found cracked but in the process of doing the FEA it was found to be possible.

There appears to be at least one RV-10 here.

I'm looking forward to the forum. Hopefully, it will be Wednesday or earlier for all us RV'ers that are only around for the first half of the week.

[Jaypratt]

RV8. 668 hours. No cracks found.

[david.perl]

33 hours, no cracks, phew

[rvbuilder2002]

Originally Posted by rvbuilder2002

The RV-10 is a special case with the bracket inspection. None have ever been found cracked but in the process of doing the FEA it was found to be possible.

Originally Posted by rleffler

There appears to be at least one RV-10

The RV-10 (potential) cracking I was talking about was talking about in my post was on the bracket flange bends. Not the rivet holes in the spar web (though I am pretty confident the post that you linked to is not a crack.... I posted that in that thread).

[MrMoisture]

A friend & I performed the SB inspection on both my -8A & -10. I purchased this $23.00 USB Borescope from Amazon and was able to reach all forward spar areas by just removing the inspection covers. We did tape the camera to a telescoping magnetic extension wand to stiffen the scope which allowed much greater control & rotation. We inspected the aft areas by sliding the scope into review position for both aircraft.
Not sure why Vans wouldn't suggest this as a possible inspection solution as it avoids removing & reinstalling control surfaces when it's not needed.
Good luck all!

[twcroy]

think I'm good to go, right wing no marks, left wing mark likely not a crack; RV-9A, 229 hours

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https://drive.google.com/open?id=0B5...Fp4ajFpc3BiRG8
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https://drive.google.com/open?id=0B5...mw2SlNfbVlVOFk

[Tim Lewis]

Attached is a photo of my RV-10's right aileron bracket (top side, the portion behind the gap seal) taken with a borescope (ViVida AbleScope VA-400, $150 from Amazon). I've not trimmed the gap fairing yet, because the borescope approach seems to provide adequate inspection of the bracket, and takes only a few minutes.



I sent message to Van's: "Based on my photo, does the borescope approach seem adequate to you?"

Reply from Gus was "The photo is clear enough to see there’s no cracks. The only reason for the trimming is because we assume most builders will not have a borescope. Also, if you do have cracks, it will need to be trimmed for access to the rivets."