Clean and prime stiffeners, brackets, and doubler.
Cleco brackets to angles.
Rivet nut plates to angles.
NOTE: In retrospect, it would be better to rivet the brackets to the angle FIRST, then rivet nut plates, due to clearance issues while bucking the rivets.
Rivet brackets to angles to form stiffener assembly, 2x.
Cleco stiffeners and doubler plate to tip rib and skin.
Rivet stiffeners and doubler plate. I elected to install an additional nut plate in the doubler plate to facilitate easier installation of tank.
