As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN AFT WET AREA APRROX. STA. 952, RBL 24-48 LATERAL FLOOR SUPPORT CORRODED AROUND FASTENER HOLES (2EA) AS MARKED. GROUNDED - YES. REMOVED AND REPLACED FLOOR SUPPORT IAW B737-800 SRM 51-40-02 AND BOEING DWG 147A5650 REV A. ORIG THICKNESS IS 0.075" REMOVED 0.019", 0.056" REMAINING FOUND OUT OF LIMITS IAW B737-800 SRM 53-70-51-1A-1.