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 MAINTENANCE REPORTED WASTE SERVICE PANEL HAS EVIDENCE OF CORROSION. MAINTENANCE REMOVED AND REPLACED HINGE ON WASTE SERVICE PANEL DDOR IAW EMB170 SRM 57-41-01. PN 170-85089-401. THE AIRCRAFT IS CURRENTLY OUT OF SERVICE, STILL IN C CHECK.