As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE CHECK IN CFIII CORROSION FOUND ON AFT WET AREA FLOOR STRUCTURE INTERCOSTAL FROM FR90 REAR PRESSURE BULKHEAD. CFFIII AFT WET AREA FLOOR STRUCTURE INTERCOSTAL FROM FR90 REAR PRESSURE BULKHEAD REMOVED AND REPLACED WITH NEW PART IAW ERJ 170 SRM 51-41-01 AND 51-43-01.