As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE SHAFT JOINING THE TWO IMPELLERS IN THE TURBOCHARGER WAS FOUND CRACKED. THIS ALLOWED THE EXHAUST SIDE IMPELLER TO SEPARATE FROM THE SHAFT. THE INTAKE IMPELLER STAYED IN PLACE, BUT DUE TO IMBALANCE, SUSTAINED SOME BLADE DAMAGE.