As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW EXPERIENCED A RT ENG FIRE LIGHT AT FLIGHT LEVEL 250. THE LIGHT INITIALLY ILLUMINATED FOR NO MORE THAN A FEW SECONDS THEN EXTINGUISHED. THE MASTER WARNING WAS CLEARED & THEN THE LIGHT RE-ILLUMINATED 10 TO 15 SECONDS LATER & REMAINED ILLUMINATED. THE FLIGHT CREW ELECTED TO SHUT DOWN & SECURE THE ENG. OBSERVATION OF BOTH ENG INSTRUMENTS PRIOR TO SHUT DOWN & OBSERVATION OF THE ENG SHOWED NO INDICATION OF AN ACTUAL FIRE. TROUBLESHOOTING DETERMINED THE UPPER INBD FLAME DETECT SENSOR TO BE FAULTY.