As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS IN NORMAL CRUISE WHEN THE PILOT HEARD A LOUD BANG FROM THE ENGINE, RESULTING IN A PARTIAL LOSS OF POWER. FORCED LANDING OFF-AIRPORT. EXAMINATION OF THE ENGINE REVEALED THAT THE NR 2 CYLINDER HAS BROKEN IN THE BARREL AREA. ENGINE PART TT IS UNKNOWN.