As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS IN HEAVY CHECK MAINTENANCE FOUND THE FORWARD CARGO LOWER DOOR SILL CORRODED. MAINTENANCE REMOVED AND REPLACED THE FORWARD CARGO DOOR LOWER SEAL REST IAW EMB 175 SRM 51-41-02. THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.