As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 0145473) AFT PASSENGER COMPARTMENT LH SIDE,BETWEEN BODY STATION 947.5 AND LBL 26,FLOOR BEAM WITH EVIDENCE OF CORROSION. AFT PASSENGER COMPARTMENT LH SIDE, BETWEEN BODY STATION 947.5 AND LBL 26, FLOOR BEAM UPPER CHORD WAS REPAIRED I.A.W. B737-900 SRM 53-70-51-2R.