Drilled hole for vent line elbow in left and right tank rib. Fit and drilled the T-406B fuel cap flange for left and right fuel tank. Dimpled the skin for the fuel cap flange rivets. Countersunk the top of the T-406B fuel cap flange for left and right fuel tank. Deburred the T-406B fuel cap flange and skin for the left and right fuel tank. Fit and drilled the VA-112 drain flange to the left and right fuel tank. Deburred the VA-112 drain flange for left and right fuel tank. Deburred the skin for the drain flange attach rivets. Made T-714 vent line clip that attached to the fuel cap flange for left and right tank. Deburred all rivet holes on the left skin.
