Using pnuematic squeezer, riveted rest of reinforcement plate to rear spar, w/flush rivets. Riveted VS-410PP hinge brackets to spar using cut-down AN426-AD4-7 rivets. Riveted 404, 407, & 406 ribs to rear spar. Trimmed flange tips of center rib 407 where it goes under forward spar VS-402, so that when skin is riveted to spar, rivet at that joint can be clearly bucked. Scotchbrited elevator and rudder ribs and spars.
