Getting started on the center section with the seat ribs. I spent some time trying to figure out the access ribs and the clearance ribs. Finally. I marked and cut the ribs as shown.
This is the completed access rib. You will want to finish attaching the reinforcing plate to the cutout rib piece before installing the nut plates.
With all the ribs cut and the rib nut plates installed I attached the ribs to the F704 aft bulkhead and the F705 bulkhead. You may notice F705 is modified for the Anti Splat Almost a 14 seat mod.
Next, the baggage area ribs are attached to F705. This takes some patience as the two ribs share clecoes in several spots AND there are small spacers in 4 spots. I found I could put a clecoe in from the front to hold the rib and spacer in place while attaching the baggage rib with another clecoe, then push the first through without loosing the spacer.
After this photo I discovered that I had mistakenly attached one rib in the wrong place, twice. This became obvious when I tried to attach the skin.
Center section skin in place. I had this assembly vertical for assembly but couldn't leave it like that for the night so I laid it back down.
Looking more like an airplane everyday.