As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) NR 1 ENGINE FIRE WARNING LIGHT ILLUMINATED DURING FLIGHT FOR ABOUT 10 SEC. PREVIOUS FLIGHT HAD SAME PROBLEM AND WAS CLEARED BY MAINTENANCE. AFTER CONSULTATION WITH DUTY PILOT FLIGHT CONTINUED. FIRE WARNING LIGHT CAME ON AGAIN AND FLIGHT WAS DIVERTED. FLT CHECK CARRIED OUT WITH NO ISSUES OR FAULTS. CREW COMMENTS, SERVICEABLE.