As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS IN HEAVY CHECK MAINTENANCE FOUND FWD CARGO DOOR AFT 3 LATCH FITTINGS HAVE CORRODED HARDWARE. MAINTENANCE REMOVED AND REPLACED CORRODED HARDWARE ON AFT 3 LATCH FITTINGS FWD CARGO DOOR. AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.