As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN PRESSURE DECK WEB 'Z' ANGLE AT STA 990 AND RBL 41 HAS SIGNS OF CORROSION. REMOVED DAMAGE, ORIG .050 REF BAC1509-100505 REV-. MATERIAL LOSS .040, REMAINING .010 FOUND OUT OF LIMITS REF B737-800 SRM 53-70 -51-1A-1 FIG 104 DETAIL C. REMOVED, LOCATED, DRILLED AND INSTALL ED NEW 'Z' ANGLE REF B737-800 SRM 51-40-02 AND BAC DWG 147A5700 REV B. NO FURTHER ACTION REQUIRED.