As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 1249 - FLIGHT DEPARTED PVD, EN ROUTE TO DCA, WITH THE NR 2 ENGINE 'A' FIRE LOOP ON MEL 26-2A. DURING CLIMB-OUT, THE NR 2 ENGINE 'B' FIRE LOOP FAULT LIGHT ILLUMINATED AND REMAINED ON. FLIGHT DIVERTED TO BOS AND LANDED WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE REMOVED AND REPLACED THE NR 2 ENGINE SOFT CORE HARNESS. OPERATIONAL CHECK GOOD. CLEARED MEL 26-2A. (M)