As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN AFT WET AREA APPROX. STA. 958,LBL 48 LONGITUDUNAL FLOOR SUPPORT UPPER SURFACE CORRODED AROUND (2EA)FASTENER HOLES AS MARKED. GROUNDED - YES. REMOVED CORROSION IAW B737-800 SRM 51-10-02, 100% MAT LOSS OUT OF LIMITS IAW B37-800 SRM 53-70-51. REMOVED AND REPLACED FLOOR SUPPORT IAW B737-800 SRM 51-40-02 AND IAW REFS AIPC 53-42-51