As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ENGINE FIRE WARNING CAME ON IN FLIGHT. BOTH BOTTLES DISCHARGED. OPENED COWLS AND CHECKED FOR INDICATION OF FIRE OR OVERHEAT. NONE FOUND. FIRE WARNING WAS A FALSE ALARM. BOTH FIRE LOOP ELEMENTS AND WIRING CHECKED GOOD. REPLACED NR 2 ENGINE FIRE DETECTION CARD. OEM KIDDE TESTED AND CONFIRMED CARD FAILURE.