As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS OUT OF SERVICE FOR HEAVY CHECK, MAINTENANCE FOUND LEVEL 2 CORROSION AT FORWARD CARGO DOOR CUT-OUT FLOOR STRUCTURE. MAINTENANCE REMOVED AND REPLACED DOUBLER IAW SRM 51-43-04. AIRCRAFT REMAINS OUT OF SERVICE HEAVY CHECK COMPLETION.