As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) RH ENGINE COUNTERWEIGHT RETAINING WASHER PNO 71907 HAD FAILED ALLOWING THE COUNTERWEIGHT ROLLER PNO 72797 TO MIGRATE ANDCONTACT NO5 CYLINDER CONNECTING ROD AND CAUSING IT TO FAIL WHICHCAUSED SEVERE DAMAGE TO THE CRANKCASE. THE RETAINING CIRCLIPPNO LW14820 REMAINED IN POSITION.