As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION REPAIR, THE LOWER SILL CHORD OF THE C1 DOOR OPENING WAS FOUND CORRODED. THE LOWER SECTIONS WERE TEMPORARILY REMOVED TO ALLOW FOR SILL REPLACEMENT AND THEN SPLICED BACK WITH REPAIR DOUBLERS AND ANGLES PER ER/A 383631-14, REV A.