As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
C4 PDX - REWORK, LEFT WING NR 4 FLAP TRACK OUTBOARD LOWER TRACK, UPPER SURFACE HAS DIVOTS, TRACK SURFACE WAS TREATED WITH NEW SURFACE COATING PRIOR TO REPAIR OF DIVOTS. COATING REQUIRES REMOVAL TO COMPLETE REPAIR. REPAIRED IAW RD8-57-988.