Countersank #40 holes for skin and rib attachment in both spars. Riveted on fuel tank and access plate nutplates. Countersank holes for #8 Fuel Tank screws. Countersank holes for #6 Access Plate screws. Ran #40 drill for Fuel Tank attachment and Wing Attach nutplates in Main Spar webs. Countersank #40 holes and deburred as per directions. Ran #30 drill for spar web rivet holes, deburred and countersank as per directions. Riveted on Fuel Tank and Wing Attach nutplates. Fabricated and tapped Wing Tie Down Brackets. Clecoed to Spars and match drilled #30 and #12 holes as per directions.
