As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE WAS REMOVED FROM SERVICE DUE TO IN-FLIGHT SHUT DOWN. DISASSEMBLY OF THE ENGINE REVEALED THE NR 4 BEARING AREA WITHIN THE HPT ROTOR REAR SHAFT AND LPT NR 4 BEARING ROTATING SEALS HAD HEAVY DAMAGE. FURTHER INVESTIGATION IS IN PROCESS AT AVIALL.