As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON COUNTERSINK AT LT WING FUEL TANK ACCESS PLATE NR 1357C, MRB 57-083-02. CORROSION ON COUNTERSINK HOLES WAS REMOVED AND MEASURED. MAX DIAMETER ALLOWABLE IS 0.532" AND MAX DIAMETER MEASURED ON 3 ADJACENT HOLES IS 0.562". THEREFORE IT IS OUT OF LIMITS IAW SRM 51-22-2A AND WAS REPLACED IAW IPC 57-30-00-05B.