Began work on the forward bottom skins by final drilling the 1/8 inch hole in F850 left and right skins Clecoed F851, and left and right F850 forward bottom skins to fuselage and final drilled #40 holes Unclecoed forward bottom skins and deburred holes and final drilled #19 the holes common with #8 screws Machine countersunk for #40 rivets in crossmembers Deburred all holes and edges in forward bottom skins
