As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUPPORT TASK: MAIN CABIN FLOOR SUPPORT FROM STA 947 TO STA 967 AT RBL 51 HAS SIGNS OF CORROSION. REMOVED DAMAGE, ORIG .205 REF BAC DWG 147A5660 REV B. MATERIAL LOSS .065, REMAINING .140 FOUND TO BE OUT OF LIMITS REF B737- 800 SRM 53-20-51-1A-1. REMOVED, LOCATED, DRILLED AND INSTALLED NEW FLOOR SUPPORT REF B737-800 SRM 51-40-02 AND BAC DWG 147A5650 REV-. NO FURTHER ACTION REQUIRED.