This is the Center Bottom Skin where the Aft Gear Brace Assembly attaches. I was trying to figure out how to get to this rivet. Unless you bend the flange out of the way, there really isn't a way. Spoke to Van's and the engineers are going to change the sequence of steps here. So if you haven't gotten to this part yet, check with them to see how it is going to be changed. I think they are going to recommend to rivet this before attaching the seat rib angle, but they will let us know. Good luck and Happy Thanksgiving to everyone.