What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON AFT CABIN FLOORBEAM Y465 5 INCHES AFT OF FRAME 66. REMOVED AND REPLACED FLOORBEAM Y464 F66 IAW SRM 51-72-11.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON AFT CABIN FLOORBEAM Y465 5 INCHES AFT OF FRAME 66. REMOVED AND REPLACED FLOORBEAM Y464 F66 IAW SRM 51-72-11.