As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 2777364) LH WING #4 SLAT LOWER SURFACE AND UPPER SURFACE OF TE WEDGE HAS AREA WITH EVIDENCE OF CORROSION 10" IB OF SLAT OB AUX TRACK. ACCOMPLISHED REPAIR ON LEFT WING SLAT #4 FTN 6A8917, LOWER SURFACE AND UPPER SURFACE OF TE WEDGE 10" IB OF SLAT OB AUX TRACK IAW ER/A 608291-14 REV ORIG. AND B737 SRM 57-42-01-2R REPAIR 11.