As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 3752 THE CREW REPORTED, RECEIVED A FIRE SYSTEM FAULT STATUS MESSAGE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE FIRE LOOPS A, AND B UNDER AFT CORE COWL IAW CRJ AMM 26-11-11, ALSO REMOVED AND REPLACED THE UPPER AND LOWER FIRE LOOP "B" IAW CRJ AMM 26-11-01, AND 26-11-03. PARTS NUMBERS: FOR A--2280267, FOR B-- 22402820, FOR FIRE LOOPS (2) 26010782. THE OPERATIONAL CHECKS WERE GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.