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, LEVEL 2 CORROSION WAS FOUND ON FLOORBEAM LOCATED IN AFT GALLEY WET AREA. MAINTENANCE REMOVED AND REPLACED THE LT FLOORBEAM AND CENTER SHEAR PLATE IAW EMB 190 SRM 51-40-02, 51-41-01, 51-43-01 AND 51-42-00. REF P/N'S 170-65669-003 (BEAM) & 170-65928-001 (SHEAR PANEL). AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.