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 DOOR LOWER SILL PLATE SEAL REST CORRODED. MAINTENANCE REMOVED AND REPLACED CENTER SECTION OF SEAL REST FORWARD CARGO DOOR LOWER SILL PLATE IAW EMB 175 SRM 51-41-01. THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.