As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, DURING DVI OF CABIN FLOOR STRUCTURE BTW FR 12-24 FOUND WEB FR 12-16 CORRODED. REPLACEMENT REQUIRED IAW SRM 51-72-11-911-001 REV. 129; THERE IS NO APPLICABLE LIMITS FOR THE DAMAGED WEB AS PER SRM 53-11-14 REV. 129. (THE DAMAGE IS WITHIN THE SPLICING AREA). DAMAGED WEB REPLACED AS PER SRM 51-72-11-911-001 REV. 129. THIS IS CLASSIFIED AS A MAJOR REPAIR.