As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ENG FIRE ANNUNCIATOR LIGHT ILLUMINATED IN CRUISE FLIGHT. TROUBLE SHOT ISSUE DOWN TO FAULTY FIRE DETECT SENSOR. REMOVED FAULTY SENSOR PN 9912036-3, SN UNK & REPLACED WITH SERVICEABLE PN 9912036-3, SN 152201 IAW AMM 26-11-01 2C & D.