As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) ENGINE SURGING ABOVE 1400 FTLBS OF TORQUE. BLEED VALVE CHECKEDOK. FIRST STAGE COMPRESSOR BLADES HAD SOME LEADING EDGE ROUGHNESS. RECOVERY WASH CARRIED OUT. STALL/SURGE AT 900 FT LBS ACCOMPANIED BY A LOUD SQUEAL FROM THE ENGINE. SUSPECT COMPRESSOR SECTION DISTRESS / FAILURE.