Cleco's left ribs to left spar, drilled #30 and #12 holes in spar to rib flange. Installed bushings in left side ribs, deburred fresh holes, torques bolts to 28 in/lbs and riveted ribs to spar per plan. Left spar complete, Cleco's right ribs to right spar, drilled and deburred #30 and #12 holes