Page 8-33 Cleco'ed the F-815A-L-1 and R-1 fwd outboard seat ribs and the F-815B-L-1 and R-1 aft outboard seat rib to the seat rib assembly from the inside. Installed the F-806E spacer and bolt at each F-815 outboard seat rib. Riveted the fwd outboard and aft outboard seat ribs to the F-806B-1 rear spar attach bulkhead Riveted the F-815A-L-1 And R-1 fwd outboard seat ribs to the F826-1 left center bottom skin and F-827-1 Right center bottom skin Riveted the F-805G-1 gussets to the F-805-L-1 and R-1 bulkheads