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 FOUND ON CENTER FUSELAGE III FLOOR SUPPORT RH SIDE PROFILE AT FR88. CENTER FUSELAGE III FLOOR SUPPORT RH SIDE PROFILE AT FR88 REPLACED WITH NEW PART IAW EMB 170 SRM 51-42-01. A/C REMAINS IN CHECK.