Seat Rib Sub Assembly

Here the ribs and various other parts are fitted and drilled to the lateral bulkhead F-806 and rear spar attach bars.
Next I turned the assembly over and clecoed the bottom center skins in place. Then I reamed out all of the seat rib assembly holes. (Be careful not to drill out the fwd and aft holes not associated w/ the rib assembly). (Bottom Center Skins shown dimpled)

Finally, I scuffed,deburred, and dimpled all the necessary parts. Primer is next.