As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURNBACK. FLIGHT CREW REPORTED NR 2 ENGINE COMPRESSOR STALL AT APPROXIMATELY 31,000 FT AND A SERIES OF SUBSEQUENT STALLS. REDUCED NR 2 ENGINE POWER TO IDLE AND ALL INDICATIONS WERE NORMAL. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT LANDED AT DFW WITHOUT INCIDENT. PERFORMED BORESCOPE INSPECTION OF HPT AND LPT BOOSTER ROTOR BLADES AND NR 1, 3 AND 8 HPC BLADES WITH NO DEFECTS NOTED. REPLACED T12 SENSOR AND PERFORMED OPERATIONAL CHECK OF FADEC SYSTEM WITH NO FAULTS NOTED ON A OR B CHANNEL.