Applied a bead of fuel tank sealant to the aft corner edge of the bottom firewall flanges Riveted the F-851-L-1 and R-1 forward bottom skin to the holes common to the F-822-1 fwd floor panel and the F-802K-1 fwd crossmember Installed rivet and screws in all hole locations in the F-820-L-1 and R-1 forward side skins Clecoed and final drilled the cooling ramp assembly for blind rivets #34, Deburred the holes