As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE OFF FROM RKSI, NR 3 ENGINE FIRE WARNING CAME ON. PERFORMED QRH PROCEDURE. DUMPED 176,000 LBS OF FUEL AND SHUTDOWN THE ENGINE. RETURNED TO RKSI. FOUND LEFT CDP TUBE FLEX JOINT FAILED. REPLACED FAILED CDP TUBE IN ACCORDANCE WITH AMM 75-25-00. LEAK CHECK GOOD IN ACCORDANCE WITH AMM 71-00-00. NACELLE TEMPERATURE NORMAL.