Rivet L & R F-805G-1 gussets to F-805 bulkheads. Rivet nut plates to L & R F-860C aft arm rests. Rivet nut plates to L & R F-806A fuselage bulkheads. Rivet nut plates to L & R F-815C outboard seat rib angles. Rivet L & R armrest assemblies together. Back rivet L & R armrest assemblies to L & R F-823 mid side skins except for F-860C aft arm rests. Clecoed F-823 mid side skins and F-815C outboard seat rib angles to center section assembly.