As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) ENGINE REAR TURBINE SHAFT NUT NOT REPLACED WITH NEW ITEM FOLLOWING MAINTENANCE. CONSEQUENTLY, AFTER 290 HRS OF ENGINE RUNNING, THE 'OLD' NUT FAILED AND BROKE INTO 4 PARTS CAUSING EXTENSIVE DAMAGE TO TURBINE WHEELS, IMPELLORS AND STATORS. PART TC: 15,395.