As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 0632681) FWD CARGO COMPARTMENT INSTALLED DOUBLER BETWEEN STA 500C-500D BETWEEN S-27R TO S-27L HAS EVIDENCE OF CORROSION. REMOVED DAMAGED (CORRODED) DOUBLERS LOCATED BTW STA 500C - 500D BTW STR 27R TO STR 27L. FABRICATED AND INSTALLED NEW DOUBLERS PER B737-SRM 51-40-02-0G AND DWG P20196 REV C.