As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:C EVIDENCE OF INTERGRANULAR CORROSION ON REAR SPAR UPPER CHORD LEFT WING AT WBL 245. HFEC CARRIED OUT IAW B727 NDTM 51-00-00 PT 6 FIG 4. CORROSION MARKED ON AIRCRAFT. REPAIR OF AREA CARRIED OUT IAW EO B727-5710-17848 APPENDIX C AND AAAE EO 2004-083-004 (B727-57-20125).