B747-400
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Aircraft Equipment Problem Less Severe
Flight Crew Became Reoriented
Aircraft
During approach at approximately 1500 AGL the master caution activated as well as the fire bell and the EICAS indicated a FIRE CARGO AFT. The PIC (PM) delegated the QRH checklist to the observer pilot and then continued to assist me with the landing duties. On short final; the observer pilot reached the point in the checklist where the cargo fire bottles needed to be discharged. The crew agreed to execute the discharge action. After discharge; and in the flare; it was noted that the FIRE CARGO AFT EICAS message had blanked. However; towards the end of the rollout; the EICAS once again indicated a FIRE CARGO AFT and again illuminated the master warning and triggered the fire bell.ATC was informed and fire equipment was requested. We stopped on the taxiway and coordinated a scan of the Aircraft with the Fire Commander.  All engines where shut down per the Fire Commander's request and we were inspected by the emergency crews.  We were given an 'all clear' report and were escorted to the cargo parking under our own power. With respect to the SHUTDOWN checklist; simply indicating the location of the CVR circuit breaker on the checklist would have made the conclusion of our flight and long day just a bit easier.
B747 First Officer experiences an Aft Cargo fire EICAS message along with the master warning and fire bell at 1500 AGL during approach. The approach is continued and the Relief Pilot handles the QRH procedures. The fire agent is discharged just before landing and the fire warning blanks. During the roll out the fire warning starts again and Airport Rescue and Fire Fighting (ARFF) is summoned; but no indication of fire is found.