Prepared F684 gussets for riveting to the vertical firewall angles. Located and drilled holes in gussets for nutplates. Installed nutplates per plans. Measured and drilled holes on the vertical angle and on the gusset which I hadn't done yet. Deburred and riveted. Drilled out rivets at firewall opening for the top part of the recess which I shouldn't have riveted yet. Drilled 7/16 holes in F9101 gear attach webs and F902 bulkheads. Deburred and scotchbrited all pieces and riveted together.
