As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 4330 - AFTER TAKEOFF CREW RECEIVED A RIGHT ENGINE FIRE WARNING. THE RIGHT ENGINE WAS SHUT DOWN AND THE EXTINGUISHER DISCHARGED. AIRCRAFT RETURNED TO BOS AND LANDED WITHOUT INCIDENT. MX INSPECTED RIGHT ENGINE AREA AND FOUND NO EVIDENCE OF FIRE. THE FIRE DETECTION CONTROL BOX WAS REPLACED AS PRECAUTIONARY MAINTENANCE. AIRCRAFT RETURNED TO SERVICE. (M)