As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT THE RT ENGINE FIRE WARNING CAME ON. THE FLIGHT CREW REDUCE THE ENGINE POWER AND THE LIGHT WENT OUT AND REMAINED OUT UNTIL LANDING. DURING MAINTENANCE INSPECTION, THE RT ENGINE BLEED AIR LINE GASKET IN THE PYLON WAS FOUND TO BE DEFECTIVE AND ALLOWING HOT BLEED AIR TO SET OFF THE FIRE WARNING SYSTEM. THE GASKET WAS REPLACED AND THE AIRCRAFT WAS RETURNED TO SERVICE.