Riveted the bottom skin to the Center section. In preparation for the next phase of contstruction (forward fuselage), the seat and baggage skins are cleco-ed in place to keep the fuselage stiff and straight. The holes for these skins were drilled to final size. The F-715 outer seat rib was fitted and drilled to the F-704 bulkhead.
Bottom skin riveted
F-715 outer ribs fitted to F-704
Seat and baggage skins to keep things rigid and square