Dimpled rudder skins, stiffeners, ribs, and associated parts. Countersunk hole on trailing edge. Backriveted stiffeners to rudder skin. Backriveted attach strip and bottom rib to riight skin. Pop riveted shear clips to corresponding stiffeners on right skin. Pop riveted stiffeners together and joined trailing edge as I went. Inserted spar and riveited shear clips to it.