As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE CLIMBING THROUGH FL280, THE NR 4 ENGINE FLAMED OUT FOLLOWED BY THE FIRE WARNING ACTIVATING FOR THE NR 4 ENGINE. COM PROCEDURES WERE FOLLOWED TO SECURE THE ENGINE AND BOTH FIRE BOTTLES WERE DISCHARGED. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO SIN. THE AIRCRAFT WAS MET ON THE RUNWAY BY CFR AND FIRE SUPPRESSION EQUIPMENT WAS USED ON THE NR 4 ENGINE. THE AIRCRAFT WAS TOWED OFF THE RUNWAY. MAINTENANCE REPLACED THE NR 4 ENGINE.