Started the day by replacing some rivets in the firewall which I wasn't happy with. I also managed to back rivet the three rivets in each bottom weldment with the long rivet set that came with the C-frame.
Riveted the nutplates to the forward and aft crossmembers of the forward floor and machine countersunk the holes for #6 dimples.
Riveted the five nutplates to the bottom of the forward floor panel.
Back riveted the intercoastal ribs, rear crossmember (8 holes only) and the floor ribs to the forward floor panel. (The forward crossmember is not riveted at this stage)
Back riveted the stiffener to the cooling air ramp.
Riveted the cooling air ramp attach angle to the forward crossmember.
Machine countersunk #6 screw holes
Riveted assembly (Forward crossmember will be riveted in a later step)
