As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN - COROSION ON CENTER WING AUX TANK TOP PANEL SURFACE AT STA 1219 TO 1239, X = 75 TO X =107. COROSSION REMOVED AS PER SRM 51-21-01 REV 47. ORIGINAL MATERIAL THICKNESS = 0.172 INCH; MATERIAL REMOVED = 0.132 INCH; MATERIAL REMAINED = 0.040 INCH - FOUND EXCEEDED LIMIT AS PER MD-11 SRM 57-10-01 REV 47, FIGURE 101. ACCOMPLISHED EA 1-5710-149871. REPAIR CLASSIFIED AS MAJOR PER GMM 6-2-100 REV 113.