What was found
FLT 6435 - RECEIVED A "CARGO BOTTLE LO" CAUTION MESSAGE. REPLACED PCB NR 2 IN JB2 AND PCB NR 2 IN JB3 AS WELL AS BOTH AFT AND FORWARD CARGO BOTTLES PER AMM 26-25-01, PN 446518-1, SN/OFF 12097, PN 446518-1 SN/OFF 12000, PN 473919-1, SN/OFF 0499A PN 473920-1, SN/OFF 0346N.