As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT THRUST FACES OF BOTH FRONT MAIN BEARING HALVES WERE SEPARATED FROM BEARING. THIS IS A ONE PIECE STYLE THRUST/MAIN BEARING. PROBLEM FOUND DURING OVERHAUL, NO INDICATIONS OF FAILURE NOTED BEFORE DISASSEMBLY. NO DAMAGE TO CASE OR CRANKSHAFT.