As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ENGINE FIRE DETECT ILLUMINATED FOR APPROXIMATELY 10 SECONDS IN FLIGHT. PILOT RETURNED TO BASE AND MAINTENANCE DETERMINED THAT THE RIGHT ENGINE FORWARD FIRE LOOP WAS DEFECTIVE THUS GIVING A FALSE FIRE WARNING. MAINTENANCE REPLACED DEFECTIVE FIRE LOOP AND AIRCRAFT WAS RELEASED FROM MAINTENANCE.