Rivet W13-01 Right Hand Attach Plate and W13-05R Right Hand Attach Angle to W12-01 Rear Spar Assembly. Rivet W10-06 Right Hand Tip Attach Angle to W08-01R Main Spar. Fabricate template to mark pilot hole on W19-02 Aft Lower Wing Skin for Tie Down Bolt. Debur W20-01R Root Doubler. Drill trailing edge of W19-01 Upper Aft Wing Skin, W03-02 Aileron Hinge Half (Wing) and W20-01R Root Doubler.