As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR-CO3206, CREW REPORTED, ENGINE TWO FIRE DETECTOR FAIL INDICATION DURING CRUISE ON EICAS. MESSAGE DISAPPEARED AFTER 30 MINUTES UPON LEVELING OFF AT 16,000 FT. MAINTENANCE REMOVED AND REPLACED NUMBER TWO ENGINE FIRE DETECTION LOOP IAW EMB145 AMM 26-11-01 AND EMB 145 AMM 26-10-01. SYSTEM OPS CHECKED GOOD.