Finally got the seat pan rivetted into place on the seat ribs and aft spar. Now just need to tap the screw holes holding the access plate for the control system and screw that plate on. At that point I will be ready to remove the wings and turn the center section over for installation of the bottom skin. <<( Note added much later. The previous statement was an error. Because only the middle four ribs attached to the seat pan, I assumed that only those four needed to be installed. I was in too big of a hurry to pull off the wings and turn over the center section. Before doing that I should have had all eight of the center section ribs installed. This caused me to need to re-assemble the wings to the center section later, when I realized the mistake and knew I needed to install the other four ribs. This was not a serious mistake, and I have fully recovered from it now, but it did cost me some time taking the wings off and on more than I should have needed to.)>>
rivet holes in ribs and seat pan deburred
seat pan finally rivetted into place
improvised bending brake for fitting the acces plate from seat floor area onto the main spar.
