As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION THRESHOLD SHEET AT LOWER SILL STRUCTURE BTW FR24A PLUS 6.366 INCHES IN FEWD CARGO COMPRTMENT; REMOVED AND REPLACED THRESHOLD SHEET AT LOWER SILL STRUCTURE BTW FR24A AND FR28 IN FWD CARGO COMPARTMENT IAW A320 SRN 51-72-11 AND DWG# 53231794.