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 Y765 FLOORBEAM FRAME 68 STR 23L; REMOVED AND REPLACED AFT CABIN Y765 FLOORBEAM FRAME 68 STR 23L IAW SRM 51-72-11/51-42-11. ALL WORLK ACCOMPLISHED ON NR 440484/26666/902984