As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT INBD FLAP NR 4 BALLSCREW HAS PITTING AND PLATING MISSING FROM THREADS. REMOVED AND REPLACED THE NR 4 FLAP BALLSCREW IAW AMM 27-51-11-024-001. LT WING NR 4 FLAP BALL SCREW, OPS CHECK GOOD IAW AMM 27-51-11-424-020 AND AMM 27-51-11-024-001.