What was found
DURING HEAVY CHECK, FWD CARGO DOOR CUTOUT LOWER AFT SEAL REST CORNER IS CORRODED. MX R & R FWD CARGO DOOR CUTOUT LOWER AFT SEAL REST CORNER IAW SRM 51-40-02, AMM 20-10-01 FILLET SEALED IAW SRM 51-21-02, 51-23-06, FCBS 53-21-00-006 NO CHANGE TO INSPECTION REQUIREMENTS, PN 170-66803-402, SEAL REST.