What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON BRACKET SUPPORT BAG LOC AT LEVEL FR74 BTW STR 29R TO STR 29L ON AFT CARGO. REPLACED SUPPORT BAG LOCATED AT LEVEL FR74 STR 29R TO STR 29L ON AFT CARGO COMPARTMENT IAW 51-40-08 AND DRAWING 170-65110-453,170-65180-455.