As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
[B737-06-3-0049] AFT CABIN FLOORBEAM BS 986.5 BETWEEN RBL 16 AND RBL 45 HAS CORROSION AS MARKED.(REF AAR NR 99835788) REMOVED CORROSION AT FLOORBEAM BS 986.5 BETWEEN RBL 16 AND RBL 45. FOUND OUT OF LIMITS IAW SRM 51-10-02 & EC/RA 53-21-01330. INSTALLED NEW FLOORBEAM, SPLICERS AND SUPPORT ANGLES ATAFT CABIN BS 986.5 BETWEEN LBL 16 AND RBL 45 REF SRM 53-70-51 & 51-40-02.