As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) NR 2 ENGINE FIRE WARNING ILLUMINATED DURING CLIMB. BOTH FIRE BOTTLES WERE DISCHARGED AND THE AIRCRAFT RETURNED TO ITS DEPARTURE POINT. POST-FLIGHT INSPECTION FOUND THE LOWER FIRE LOOP FAULTY, THE PINS AT THE CONNECTORS WERE CORRODED. THE FIRE LOOP WAS REPLACED AND THE SYSTEM FUNCTIONED NORMALLY.