As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRIOR TO EVENT FLIGHT PILOT REPORTED AN UNUSUAL SOUND WHILE ON APPROACH TO LAND. THE ENGINE FAILED 35 MINUTES INTO A 40 MINUTE FLIGHT. THE PILOT PULLED THE THROTTLE IMMEDIATELY ONCE THE ENGINE BEGAN TO VIBRATE AND CONTINUED TO SECURE THE ENGINE AND ACFT FOR AN OFF FIELD LANDING.