The A.C. 43.13 in paragraph 1-45 says: In case of elongated bolt holes in a spar, or cracks in the vicinity of bolt holes, splice in a new section of spar, or replace the spar entirely. If ... minimal ... on noncritical fittings, repair may be feasible.
The 43.13 was updated in 1998, previously in 1988, and another version before that. Weather or not anyone took into consideration the better epoxies we have since this was originally written who knows how long ago is anyone's guess. My personal feeling without seeing how far the hole was missed is that it MAY be perfectly adequate to repair the hole by filling it with epoxy (don't know about the dowel with the grain in the completely wrong direction). One thing I would look at is what side of the hole will the repair be on? I would think that if you missed along the grain instead of accross it that would be better. This is a question where you will get a lot of opinions and will certainly not get a 100% correct answer from anyone. Add in the usual disclamors about these just being my opinions as I am not a structural engineer or expert in wood repair, but I did stay at a Holiday Inn Express last night. Brian Kraut Engineering Alternatives, Inc. www.engalt.com -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On Behalf Of boeing757me...@aol.com Sent: Wednesday, May 04, 2005 10:58 PM To: kr...@mylist.net Subject: Re: KR> WAF Would you trust it with you life? I would be building a new spar. Mine are perfect and I thought about building new ones just because I did like the E.D. that is in the WAF and I wanted to make the spar caps slightly thicker so there is alot more meat at the WAF. Maybe that why I am only about 15% done and going on 8 years. Chris Theroux Gilbert, AZ -----Original Message----- From: babyw...@aol.com To: kr...@mylist.net Sent: Wed, 04 May 2005 17:12:32 -0400 Subject: KR> WAF In spite of using the WAF drilling the main spar I missed a little bit. Is it permissible to use T88 and a 3/16 wood dowl to plug the mistake or do I have to make a new spar? Garrry Cowles Santa Fe NM _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
