As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT WING NR 1 SLAT INBOARD IDLER TRACK, OUTBOARD RIB HAS EXFOLIATION CORROSION AROUND TRACK DOOR FORWARD HINGE BOSS. REMOVED CORROSION, DRILLED NEW INBOARD AND OUTBOARD IDLER TRACK RIBS, INSTALLED NEW INBOARD AND OUTBOARD IDLER TRACK RIBS. LEVEL 2 CORROSION.