Fuselage center section #45 - Lower firewall assembly

Working on the lower firewall shelf and lower corner skins.

Sealed and riveted on the lower firewall shelf.

Installed the sealant fillet between the sides of the center section.

Left side firewall stiffener angle installed.

Had to countersink for these screws that attach the oil tank attach brackets.

Screws, washers and nuts installed.  One pulled rivet gets put in from the aft side of the firewall due to clearance issues.

Right side firewall stiffener angle installed.

Match drilled the lower corner cowl attach plates.

All drilled.

And finally riveted.  The lower three holes get AN470 solid rivets.