As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING COMPLIANCE OF AD, THE FLAP TUBE WAS FOUND NOT TO PASS. A NEW STEEL TUBE WS ORDERED AND IN THE REPLACEMENT PROCEDURE THE LEFT BELLCRANK (PN 16424-00) WAS FOUND TO HAVE RUST INSIDE. USING AN AWL TO PUSH ON THE RUSTED AREAS, IT COLLAPSED THE WALLS. WATER HAD COLLECTED IN THE AREA BETWEEN THE WALLS AND ROTTED THE STEEL. NO DRAIN HOLES ARE LOCATED IN THAT AREA. THE AD DOES NOT CALL FOR AN INSPECTION OF THIS PART.