As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED LOSS OF TURBO BOOST AND OIL PRESSURE, SHUT DOWN ENGINE AND FEATHERED PROPELLER IN FLIGHT. LANDED AIRCRAFT WITHOUT FURTHER INCIDENT. DURING POST FLIGHT INSPECTION OF TURBO OIL WAS OBSERVED IN THE EXHAUST OVERBOARD PIPE INDICATING SEAL FAILURE. BEARING FAILURE WILL CAUSE LACK OF BOOST AND ATTRIBUTED TO SEAL FAILURE.