As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-16 CHECK GALVANIC CORROSION WAS FOUND ON LT INBOARD MID FLAP OUTBOARD GIMBAL SHAFT INDEX PLATE. MAINTENANCE REMOVED AND REPLACED LT INBOARD MID FLAP OUTBOARD GIMBAL SHAFT INDEX PLATE IAW B737-300 OHM 57-53-22.