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, LEVEL 2 CORROSION WAS FOUND ON THE LAV SERVICE DOOR HINGE. MAINTENANCE REMOVED AND REPLACED THE LAV SERVICE DOOR HALF HINGE IAW EMB 175 SRM 51-41-02 & 51-43-04. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.