14-5: Step 1: Apply protective tape to L-spar over stepped bars. Step 3: Rivet forward Flange of all wing ribs except the most outboard rib. I rivetted with manufactured head side to ribs on all but the most inboard rib where the torque tube support assemby inhibited use of the rivet gun on rib flange side. Rivet the forward most holes in the forward tabs of the seven inboard most W-1011-L/R wing ribs. I squeezed these with the Tatco. Step 4; Removed protective tape and adhesive from the main spar.