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 AFT CABIN -Y1292 FLOORBEAM FRAME 68 STR 23R; BLENDED AND CHECKED LIMITS. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-14-283-002 FIG 001 REMOVED AND REPLACED IAW SRM 51-42-11 AT AFT CABIN -Y1292 FLOORBEAM FRAME 68 STR 23R. WORK ACCOMPLISHED PER PRODUCTION NUMBER 440484-26659