Butt end spar repair

[CTA]

I read in another post that There is a repair for the really small cracks at the wing spar attach fitting area at the fuselage. Anyone know what that repair is and where I can get more information on that type of repair?

Thanks!

 

[Tangogawd]

There used to be a repair that an old timey shop here used to have the approval for such. I've watched him do the repair. He used resorcinol glue and a syringe to inject into the crack, then clamp until cured, and sand smooth. Then use resorcinol to glue up the plywood doublers. It was approved for so long as the crack did not go past the first hole for the wing root bracket.

My plane had such repairs on two of the spars. Done some 25 years prior to me replacing them for Milman's. Those repairs were still solid and going strong.

The FAA took away his approval for the repair sometime in the late 90s or early 2ks. He blamed it on ACA, said they came after him hard.

 

[CTA]

There used to be a repair that an old timey shop here used to have the approval for such. I've watched him do the repair. He used resorcinol glue and a syringe to inject into the crack, then clamp until cured, and sand smooth. Then use resorcinol to glue up the plywood doublers. It was approved for so long as the crack did not go past the first hole for the wing root bracket.

My plane had such repairs on two of the spars. Done some 25 years prior to me replacing them for Milman's. Those repairs were still solid and going strong.

The FAA took away his approval for the repair sometime in the late 90s or early 2ks. He blamed it on ACA, said they came after him hard.

Did you have a 337 for the repair? Or recall the N number to which the repair was made.

 

[Tangogawd]

I don't recall a 337 stating anything of value for today's requirements.... maybe stated IAW an approved letter of sorts, which for sure I don't have.

As far as the other planes, can't recall N numbers, I can barely remember my own!

Either way, I don't see a way the FAA is going to allow a repair to a crack in a wooden spar these days. That's a lot of neck for a Fed to stick out for something that is readily available new.

I do believe that replacing that spar is the only way to go these days.

 

[Bob Turner]

But do check 43-13. There are some things that are allowable.