As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:C**SUPPLEMENTAL SDR**LH WING LOWER SKIN AT STA 760 TE HAS A 1.30" LONG BY 4.00" WIDE AREA OF INTERGRANULAR CORROSION WHICH WHEN REMOVED HAD .110" OF MATERIAL LOSS MAX ALLOWED IS .40" PER SRM 57-20-01-1A-1 TABLE 2.REPAIR PER RCD INSTRUCTIONS EO B757-5730-82166-A.