Finished machine countersinking the left flap spar. dissassembled and deburred all holes in the left flap skeleton. drilled holes in the inboard rib incorrectly. It was the wrong nutplate and it moved. I'm going to replace it. Machine countersunk the holes in the left aileron I had missed. Riveted the nutplates and both ribs to the left aileron spar. Riveted top of both ribs to spar with exception of the tips.
