After priming the components I began to assemble parts. The trim tab access doubler is the first part I’ve riveted in a while. I was able to dimple the nutplates with the compact female dimple die from Cleavland. I backrivetd the nutplates to the doubler since it was easy to access all the rivets and I like back-riveting.
Trim tab is next. I began by clecoing the entire assembly together, final-drilling the trim-tab #40 holes to #33 for the MK-319-BS blind rivets, and measuring the trailing edge wedge. Then the assembly was taken apart and I broke the trailing edges of the skins, masked and sanded the skins where the trailing edge foam ribs were located.