As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT FIRE WARNING FOR NR1 ENGINE ZONE 2 CAME ON. PRECAUTIONARY SHUT DOWN OF NR1 ENGINE CARRIED OUT AND BOTH LEFT HAND FIRE BOTTLES DISCHARGED. SUBSEQUENT MAINTENANCE ACTION FOUND FIRE SENSE ELEMENT AT FAULT. ELEMENT AND DISCHARGED FIRE BOTTLES REPLACED.