As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE MAINTENANCE BASE VISIT FOUND THE CARGO ENTRANCE SILL CORRODED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED CORROSION AND REPAIRED THE CARGO DOOOR CENTER LOWER SILL IAW EO EM-53MR-1674. THE AIRCRAFT WAS RETURNED TO SERVICE.