As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW REPORTED NR 1 ENGINE FIRE WARNING ILLUMINATED IN FLIGHT. AIRCRAFT HEADING CHANGED AND WARNING STILL ILLUMINATED. EMERGENCY CALL MADE AND ENGINE SHUT DOWN IN FLIGHT. NR 1 ENGINE FORWARD UPPER FLAME DETECTOR REPLACED WITH NEW. GROUND FUNCTION CHECKED. NO FURTHER FAULTS NOTED.