As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH PILOT NOTICED A SUDDEN "BANG" ACCOMPANIED BY SLIGHT POWER & RPM LOSS ON THE LEFT ENGINE. SMOKE AND OIL BEGAN COMING FROM LEFT ENGINE. OIL PRESSURE DROPPED AND PILOT SECURED THE ENGINE PER COMPANY PROCEDURES. INITIAL INSPECTION FOUND THE NUMBER 6 CYLINDER TO HAVE SEPARATED FROM THE ENGINE BUT STILL REMAINED WITHIN THE COWLING, AND THE ENGINE CRANK CASE TO BE DAMAGED. THE ENGINE HAS BEEN REPLACED AND WILL BE SENT TO CONTINENTAL FOR ANALYSIS.