As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS IN FOR HEAVY CHECK, MAINTENANCE REPORTED LEVEL 2 CORROSION ON THE FLOOR STRUCTURE GUSSET SPLICE PLATE AT FR 89 FLOORBEAM RBL 10. MAINTENANCE REMOVED AND REPLACED GUSSET PLATE AT FR 89 FLOORBEAM RBL 10 IAW SRM 51-40-08 AND 53-30-10. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.