What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED AT AFT CARGO DOOR CUTOUT, ON LOWER UPPER SEAL REST SURFACE; R & R SEAL REST IAW SRM 20-10-01.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED AT AFT CARGO DOOR CUTOUT, ON LOWER UPPER SEAL REST SURFACE; R & R SEAL REST IAW SRM 20-10-01.