As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: CORROSION ON FLOOR SUPPORT (UPPER SURFACE) BTW FR 12-13 AND Y=350 TO Y=410 RH SIDE; REF TOXM WO 2047 NR 00252. REMOVED AND REPLACE FLOOR SUPPORT IAW EMB 190 SRM 51-41-01 AND 51-43-01. BTW FR 12-13 AND Y=350 TO Y=410 RH SIDE.