Michael,
As was mentioned , the know all see all is the Structural Repair Manual.
And with saying that I will add , if it is an old plane it still may not
help you much. If it is a plane that still gets made you probably will find
everything you need in the SRM. ( As the previous post I was glad to learn
the no corrosion stuff in that SRM) SRM's sure usually cover corrosion,
damage repairs, and what is acceptable. For things not acceptable you are
usually given a proper repair. And alot of times even told when engineering
analysis was necessary. Since this is a homebuilt forum, I will say that
SRM's are for certified aircraft published by the aircraft maker.
Using AC43.13-1B, I would say anything you felt would take an engineer
to approve of a fix , replace the tube. If you don't see a repair in there
it's usually because the fix will have to come from higher up..DME.
Homebuilts get alot of freedom in their fixes, but holding your airplane to
some FAA standards can be a good thing as well. Most homebuilders nor A&P's
are engineers,....and you may have a case here where you need one. Your
other option would be replace the tube in question.
Of course since myself nor any of us on here have seen the damage in
question my answer is on the side of safety and caution. When it comes to
airplanes it always seems to work out best that way

Patrick
student SPL
aircraft structural mech

"Michael Horowitz" wrote in message
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WP- steel and fabric taildragger. - Mike