As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BS 1100 LBL85 WING CTR SECTION UPPER SKIN FOUND CORRODED. CORROSION BLEND OUT 0.067" BY 4" BY 5.5" EXCEED SRM LIMIT. BS 1100 LBL85 WING CTR SECTION UPPER SKIN CORRODED AREA REPAIRED AS PER RS R57-14-35578 AND UPS ENGINEERING FILE NUMBER 747-57-20110.