As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CRUISE, ENGINE VIBRATION AND LOSS OF RPM WAS NOTICED. AIRCRAFT MADE PRECAUTIONARY LANDING ON LAKE. DURING DESCENT, SMOKE FROM OIL WAS OBSERVED AND ENGINE WAS SHUT DOWN AFTER LANDING. INITIAL INSPECTION INDICATES INTERNAL DAMAGE. ENGINE WILL BE REPLACED AND REPORT WILL FOLLOW WHEN AVAILABLE.