What was found
DURING HEAVY MAINTENANCE, CORROSION STR 41L AT LEVEL FR 57+7 INCH IN AFT CARGO COMPARTMENT, REF WO 2019-159/1, WCC 2019-185933. PERFORMED PERMANENT REPAIR AT STR 41L BTW FR 57 TO FR 60 IN AFT CARGO COMPARTMENT IAW SRM 53-00-13. REPAIR IS CATEGORY A AND NO FURTHER ACTION IS REQUIRED.