Epoxy Repairs of Certified Wooden Aircraft

[skyboltone]

Here is an interesting discussion about Epoxy in certified aircraft structures. I've checked the data included here against my 1 year old copy of AC43.13.1b and there are no changes since this was written. Though the subject of the article is aircraft repair it also addresses how new aircraft, with prior FAA approval via TSO may use epoxy for specific aircraft manufacture. The rule still pertains that urea formaldehyde (resorcinol) is the only generally approved aircraft adhesive for general repair; BUT, the A&P IA may sign repairs off as being "substantially equal" and the article includes 337s to submit with the paperwork to give the local FSDO a leg up. In the case of EAB anything goes. As far as SLSA/ELSA go, they work from ASTM International Standards and none of this applies. The the case of these aircraft, the manufacturer's maintenance manual, not AC43.13 apply.

It goes to show that one (me) should read my AC43.13.1b more often. Things do change.

Here you go:

http://www.systemthree.com/reslibrary/literature/CertWoodenAircraft.pdf

 

[TFF1]

 

[TFF1]

 

[jrs14855]

 

[skyboltone]

 

[jstreat]

 

[jrs14855]