Narrative:

On takeoff from kix, we received a momentary main cargo fire warning. This included an EICAS message, fire bell, and fire lights at 80 KTS on takeoff roll. This warning was extremely brief, it quickly extinguished. Once airborne and in cruise flight, we coordinated with our company dispatcher via ACARS, and the decision was made to divert to tokyo (narita) airport. We declared an emergency, dumped as much fuel as possible, and then made an overweight landing without any incident. After landing, the main cargo fire warning illuminated again, and remained on until the aircraft was shut down and secured. Due to the language barriers of being in the japan ATC system, communicating our abnormal situation was nearly impossible. It took over '6 xmissions' to get them to understand that we were declaring an emergency and that we needed to land as soon as possible. Most importantly, once we landed, it was impossible to talk with the fire crews. We could not understand them, and they could not speak any english. Therefore, the situation became very hectic and chaotic. Not being able to communicate clearly with ATC or the craff personnel would've made this a very dire situation, had we been on fire.

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Original NASA ASRS Text

Title: B767 FLT CREW RPTED A MAIN CARGO FIRE WARNING ON TKOF, DECLARED AN EMER, AND DIVERTED TO RJAA.

Narrative: ON TKOF FROM KIX, WE RECEIVED A MOMENTARY MAIN CARGO FIRE WARNING. THIS INCLUDED AN EICAS MESSAGE, FIRE BELL, AND FIRE LIGHTS AT 80 KTS ON TKOF ROLL. THIS WARNING WAS EXTREMELY BRIEF, IT QUICKLY EXTINGUISHED. ONCE AIRBORNE AND IN CRUISE FLT, WE COORDINATED WITH OUR COMPANY DISPATCHER VIA ACARS, AND THE DECISION WAS MADE TO DIVERT TO TOKYO (NARITA) ARPT. WE DECLARED AN EMER, DUMPED AS MUCH FUEL AS POSSIBLE, AND THEN MADE AN OVERWT LNDG WITHOUT ANY INCIDENT. AFTER LNDG, THE MAIN CARGO FIRE WARNING ILLUMINATED AGAIN, AND REMAINED ON UNTIL THE ACFT WAS SHUT DOWN AND SECURED. DUE TO THE LANGUAGE BARRIERS OF BEING IN THE JAPAN ATC SYS, COMMUNICATING OUR ABNORMAL SIT WAS NEARLY IMPOSSIBLE. IT TOOK OVER '6 XMISSIONS' TO GET THEM TO UNDERSTAND THAT WE WERE DECLARING AN EMER AND THAT WE NEEDED TO LAND ASAP. MOST IMPORTANTLY, ONCE WE LANDED, IT WAS IMPOSSIBLE TO TALK WITH THE FIRE CREWS. WE COULD NOT UNDERSTAND THEM, AND THEY COULD NOT SPEAK ANY ENGLISH. THEREFORE, THE SIT BECAME VERY HECTIC AND CHAOTIC. NOT BEING ABLE TO COMMUNICATE CLRLY WITH ATC OR THE CRAFF PERSONNEL WOULD'VE MADE THIS A VERY DIRE SIT, HAD WE BEEN ON FIRE.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.