As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
**WHILE AIRCRAFT WAS IN HEAVY CHECK** MAINTENANCE FOUND PASSENGER CABIN FLOOR FRAME 84 RBL 51"FLOOR SUPPORT CORRODED AT FASTENER HOLE. MAINTENANCE REMOVED AND REPLACED FLOOR SUPPORT PANEL IAW SRM 51-40-08. THIS AIRCRAFT REMAINS IN HEAVY CHECK