What was found
DURING PREFLIGHT RECEIVED A CARGO FIRE LOWER FWD 1 ALERT. FORWARD CARGO WAS CLOSED. COMPLIED WITH QRH. INSTALLED AGENT 1 LOWER CARGO COMPARTMENT FIRE EXTINGUISHER CONTAINER'S FWD AND AFT DISCHARGE HEADS AND DISCHARGE CARTRIDGES IN REF TO AMM 26-22-01-4. R&R MSC IAW MM 31-42-01. RECONNECTED CONNECTORS AND OPS CHECK GOOD REF 26-22-01-4. COMPLIED WITH A ROUTING AND LEAK CHECK OF FWD CARGO BOTTLE NR 1 DEPLOYMENT LINES REF 26-22-05-2, CHECKS GOOD. OK FOR SERVICE.