As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-15 CHECK CORROSION WAS FOUND ON LT WING LOWER SURFACE SKIN AT NR 2 FLAP TRACK ATTACH POINT. MAINTENANCE REMOVED CORROSION ON LT WING LOWER SURFACE SKIN BY MACHINING A FLAT STEP; PERFORMED A HFEC INSPECTION TO VERIFY MACHINED AREA WAS NOT CRACKED; FABRICATED AN ANTI-FRET STRIP AND TAPERED SHIM; INSTALLED REPAIR PARTS IAW 15-5724-03155-SS1.