As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON MAIN CABIN FLOORBEAM Y1292 FRAM 67 + 16" STR 23L; REF NR 440578-26157. REMOVED CORROSION ON FLOORBEAM Y1292 AT FR 16 +16 STR 23L. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-14-283-002 & RECEIVED NEW FLOOR BEAM Y1292 & INSTALLED IAW SRM 51-42-11 PG 1 REMOVED DOT W514.