As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY DECLARED, AIR RETURN TO DEPARTURE. CREW PERFORMED A RETURN TO FIELD AFTER ENGINE 2 EXPERIENCED POSSIBLE COMPRESSOR STALL. REPORTED SEVERAL AUDIBLE STALLS ON TAKEOFF FOLLOWED BY VIBRATION AND BURNED RUBBER/METALLIC ODOR IN THE CABIN. ACFT LANDING WAS UNEVENTFUL. R & R ENGINE 2.