As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO WL156 STA.765 TO STA.780 STR.25L "Z" CHANNEL HAS CORROSION NUMEROUS PLACES. / AFT CARGO LH Z CHANNEL CORROSION FOUND AT STA 765-780 STR25L WL156 REMOVED IN AN AREA OF 1" X 1" MEASURES .020" DEEP, OUT OF LIMITS PER SRM 53-00-53-1A-2. REMOVED AND REPLACED AFT CARGO LH Z CHANNEL ASSY IAW SRM 51-40-02-0G-0 AND DWG 146A7500.