May 5, 2012 (Horiz. Stab.)

Well, it was still raining this morning so put a few hours in on the RV-12.

First I fabricated the hinge stops out of 5/16" aluminum tubing, then separated and prepped the aft rib clips.

I then clecoed the spar box assembly back together. Then I riveted the countersunk holes and the inboard spar box ribs.  After that the aft rib clips were riveted to the spar box assembly.

With the time I had left I was able to radius, debur & flute the forward ribs. Also, I deburred & fluted the aft ribs.

Here's a picture of all of the parts ready for assembly.