spaceflightmeow
Active Member
After tightening the bolts on the right wing Z-brackets for the first time, I noticed some cuttings and residue on the bolt.
http://imgur.com/a/aUbmS
EDIT: airguy, good eye. The nutplate at the bottom of the image did have a bucking bar hit it on the threaded part.
After removing the bolt and cleaning it, a bunch of black gunk came off. Some of this is material from the nutplate.
Looking at the hole in the Z-bracket and spar web, it appears that the bolt threads have cut threads in the spar web (and also a little bit in the Z-bracket)
How bad is this? Can I repair it by reaming the holes smooth?
http://imgur.com/a/aUbmS
EDIT: airguy, good eye. The nutplate at the bottom of the image did have a bucking bar hit it on the threaded part.
After removing the bolt and cleaning it, a bunch of black gunk came off. Some of this is material from the nutplate.
Looking at the hole in the Z-bracket and spar web, it appears that the bolt threads have cut threads in the spar web (and also a little bit in the Z-bracket)
How bad is this? Can I repair it by reaming the holes smooth?
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