I spent the vast majority of today's work session edge deburring two remaining seat ribs, the baggage ribs, and the corner ribs. I also final drilled the baggage floors to the two inboard baggage rib nutplate rivet holes. The screw holes and all of the blind rivet holes were already final size, so I just deburred them. I also deburred the rivet holes in both bottom flanges of the F-404 bulkhead.
Just for a bit of a (badly needed) change of pace I broke out the crotch strap installation kit, and reinstalled the seat ribs to the F-404 bulkhead in preparation for drilling the crotch brackets to them. The pre-punched holes for the strap fitting bolts are for Vans belts, but I'm about 90% sure I'm going with Crow harnesses, so I'm going to call them and get some dimensions on their strap ends before I drill the brackets.
Vans crotch strap kit.
The front and rear brackets aligned and clamped for drilling the hole for the strap bracket bolt.