What was found
DURING HEAVY MAINATENANCE, FOUND FWD CARGO DOOR LOWER BEAM CORRODED AT THE AFT SEAL REST CORNER. R & R THE BEAM, IAW SRM 51-41-01, 51-41-02, 51-43-03, 51=43-04. PERFORMED PRESSURIZATION CHECK OF ACFT IAW AMM 21-31-00. LEAK CHECKED GOOD.