As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY CHECK MAINTENANCE FOUND CORROSION ON CENTER FUSELAGE III FLOOR STRUCTURE, LH SHEAR SPLICE PLATE AT FR87. LH SHEAR SPLICE PLATE @ FR87 FOUND CORRODED HAS BEEN REMOVED AND REPLACED IAW EMB 175 SRM 51-42-04. A/C REMAINS IN CHECK.