As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, THE NR 2 ENGINE FIRE WARNING ILLUMINATED. CREW FOLLOWED COCKPIT OPERATING MANUAL, FIRED BOTTLE, IFSD AND SUBSEQUENTLY DUMPED 147,000 LBS OF FUEL AND RETURNED TO LAX. MAINTENANCE FOUND NR 2 ENGINE TURBINE EXHAUST CASE UNCONTAINED FAILURE. REPLACED NR 2 ENGINE AND CHECK WAS NORMAL.