Trimmed flange of cooler stiffener, as directed, and deburred. Riveted cooler stiffener and corresponding nutplates to the firewall bottom. Riveted nutplates to the left and right tunnel ribs and forward fuselage skin. Fabricated two firewall spacers, as directed. Attached two cowl attach plates using firewall spacers, as directed. Enlarged the hole between the gasolater attach holes to 9/16.
