As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK INSPECTION, CORROSION WAS FOUND BEYOND LIMITS ON BOTH THRESHOLD SUPPORT BRACKETS OF PASSENGER DOOR. MAINTENANCE REMOVED AND REPLACED THE CORRODED THRESHOLD SUPPORT BRACKETS IAW SRM 51-25-01. AIRCRAFT WAS RELEASED FROM C-CHECK ON MARCH 21,2004.