As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 0329912) STA312 FLOOR BEAM HAS CORROSION AROUND FASTENER HOLES AT LBL16 AND LBL13 WL208. TRIMMED OUT FLOOR BEAM UPPER CHORD STA 312 RBL 27" TO LBL 30" IAW B737 SRM 53-10-51-2R-12. REPAIRED NEW REPLACEMENT T-CHORD SECTION STA 312 RBL 27" TO LBL 30" IAW B737 SRM 53-10-51-2R-12.