As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE WAS REMOVED FROM N827NK NR 2 POSITION FOR IN FLIGHT SHUTDOWN. DISASSEMBLY AND INSPECTION REVEALED EVIDENCE OF A POSSIBLE INTERNAL OIL FIRE RESULTING IN THE HIGH PRESSURE TURBINE SHAFT FRACTURING. THE REAR TURBINE SECTION WAS SEVERELY DAMAGED WITH NO PENETRATION OF EXTERIOR CASES.