As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RH MAIN CABIN FLOOR SUPPORT BEAM UPPER CHORD HAS CORROSION, BS320, RBL-56 DOT:V657. GROUNDED - YES. BLENDED OUT CORROSION, ORIGINAL THICKNESS 0.125 IAW B737-800 SRM 53-10-51.REMOVED 0.037,REMAINING THICKNESS 0.088.AREA OUT OF LIMITS.REPAIRED AREA IAW B737-800 SRM 53-10-51-2R-7REPAIR IS A CATEGORY "A" REPAIR.REMOVED DOT.