Deburred all forward and aft holes of seat rib assembly skins F-827-1 and F-826-1. Rolled aft edge of skins. Countersunk #30 holes in F-822-1 forward floor panel common to flanges on center section assembly. Deburred L & R F-823-1 mid side skins. Dimpled and countersunk all holes for L F-823-1 mid side skin.
