As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATB - NR 3 ENGINE FIRE WARNING SOUNDED FOR 5 SECONDS. THIS WAS ACCOMPANIED BY NR3 HYD FAIL AND NR 3 ENG FADEC MAIN ALERT. WE DUMPED ABOUT 85,000 LBS OF FUEL AND RETURNED TO ANC. ACFT OOS FOR REPAIR. REPLACED NR 3 RT ENG ON LP 381588/1. THIS DEFERRED ITEM TRANSFERRED TO NRC 254002 AND ROUTED WITH REMOVED ENG