As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
5404-EWR-DURING CLIMB LEFT ENGINE FIRE INDICATION AT 2000 FEET, FIRE BOTTLE WAS BLOWN AND WARNING LIGHT WENT OUT. MAINTENANCE REMOVED AND REPLACED THE LEFT HAND FIRE BOTTLE, BOTH SQUIBS AND THE LEFT HAND FIFR LOOP IAW J41 MAINTENANCE MANUAL.