Got all of the seat ribs and baggage compartment ribs prepped and primed. It was a lot, but now I'm ready to do a lot of assembly.

Built the seat belt attach sub-assemblies. Then I upsized the tooling hole on three of the left ribs for a coax cable for the con antenna I plan to put under the left rear seat.

Then started assembly of the ribs by riveting the flush heads in the outboard seat ribs. The riveted the uprights. Now I had to take a pause and figure out what all needs rivets or countersinks. I feel like they're not very descriptive in this section. Went ahead and cleco'd all all of the seat ribs, the baggage bulkhead and the baggage ribs in place so I could visualize it all.

3/12: started riveting everything together this morning. The rivets down inside the uprights were intimidating but actually got them without too much trouble. Just enough room for the gun and the double offset set to fit down between the bulkheads. All of the rib the rear spar rivets were easy except the inboard tunnel that for whatever reason I struggled with the double offset. Had to drill three out with the 90 degree drill. Recovered ok.

Riveted the step doubler on the outboard baggage floor ribs.

3/13: all this thinking about conduit runs and I almost went too far before drilling holes in the seat ribs. I had already riveted the baggage bulkhead on to the first rib when I stopped myself. I was able to shift ribs around and get a 7/8” step bit between the ribs. To drill enough holes for four conduits. Then installed the remaining rivets from the baggage bulhead to the seat ribs.

Snuck out late and got the baggage floor ribs riveted too. Ready for bottom skins.