Deburred and fluted all tank ribs. Trimmed and deburred internal tank stiffeners. Trimmed, deburred and primed tank attach zee's then installed K1003 nutplates as shown. Fabricated two 64 1/4" J channel stiffeners for upper surface of tank skins. Deburred tank skins and clecoed stiffeners in place then final drilled to skin. Trimmed two most inboard lower siffeners for rib clearance as shown on plans. Clecoed tank ribs in place.
