More tank preparations. Fit and drilled the fuel tank flange to the right tank skin. Match drilled the fuel drain flange to the right skin. Located and drilled rivet holes in the outboard rib nose reinforcement piece and then match drilled to the rib. Fabricated the flop tube anti hang up brackets from sheet aluminum stock and riveted one to inside of inboard rib for left tank and match drilled the other for attachment to stiffener and rib. Partially reassembled left tank using clecoes. Match drilled fuel filler flange and drain flange to left skin.
