Rivet L & R F-843 lower longerons to the F-822 forward fuselage sub structure. Attached SV-1 air vent to forward side skin F-820-L-1. Primed bottom center section overlap of F-822-1 forward floor panel. Drilled upper aft holes of L & R F-878 mid cab in braces for AN4 bolts. Fit forward fuselage substructure to center section assembly and riveted nut plates and L & R F-878 mid cabin braces to top flange of center section. Riveted and bolted L & R mid cabin braces to forward center section assembly.
