Elevators 9-13-1 to 9-13-3, 9-12-1 redo
I clecoed the front spars to the elevator ribs and skins, and prepared to blind rivet the spars to the ribs. Front spars attached to the elevators All blind rivets were easily set using the pneumatic rivet puller. Blind rivets holding the front spar to the ribs (photo taken after completing other riveting below) While attaching the front spars, I noticed some slight oil canning in the middle panel of the bottom left elevator skin. It looks as though the skin is under some compression from the rivets attaching it to the rear spar around that panel. I did some research and decided that I want to try to fix the oil canning rather than letting it be. This will, however, involve drilling out up to 25 rivets along the bottom left rear spar in the trim tab area. I will then re-rivet the skin to the rear spar while applying some opposing force to the spar so that the skin remains tight when that force is removed. Thankfully re-riveting can be done using the pneumatic squeezer for these rivets