Brief Description: Rivet L-Angles, updrill ribs, trial fit lower inbo
Removed lower outboard skin; deburred L-angle holes and L-angles themselves. While the skin was inverted, installed 2 clecos per L-angle. Flipped skin, positioned, and cleco'd skin to ribs and aft spar. Added additional cleco's to the L-angles to provide support. Riveted all L-angles.
Removed skin; up-drilled rib flanges to #30, then #20. Installed lower outboard skin. Took a long time to get both the front and rear spars leveled WRT each other. Cleco'd the skin to ribs.
Rechecked everything was still level.
Dug out lower inboard skin (.040 thick!), positioned, and cleco'd in place.