As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE REMOVED DUE TO TURBINE OVERHAUL, COMPRESSOR N1 SHAFTING INSPECTION AND UPGRADE CEB'S. UPON INSPECTION OF COMPRESSOR PARTS NOTED THE FOLLOWING: TURNING VANE APPEARS TO BE SEPARATING FROM FORWARD AND AFT PLATES ON DIFFUSER VANE ASSY AND MATING SURFACES ARE DEFLECTED CAUSING LOW POWER DURING TEST CELL RUN.