As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB PASSING 12,000 A LOUD NOISE WAS HEARD FOLLOWED BY AN IMMEDIATE ROLLBACK ON THE RT ENGINE. SHORTLY THEREAFTER WERE INDICATIONS OF FIRE. THE LIGHT WENT OUT ALMOST IMMEDIATELY AS THE CHECKLIST WAS RUN. RETURNED TO BOS. TROUBLESHOOTING IN PROGRESS. REPLACED NUMBER TWO ENGINE DUE TO COMPRESSOR STALL AT 12000 FT. CLOSED.