As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) - ENGINE MAKING CLICKING SOUND SIMILAR TO EXCESSIVE VALVE CLEARANCES. OIL SCREEN INSPECTED AND BRASS PARTICLES FOUND. VALVE CLEARANCES ADJUSTED AND OIL SYSTEM FLUSHED. ENGINE GROUND RUN AND ENGINE NOISE STILL EXISTED. SPARK PLUGS PULLED AND EXAMINED AND NR 9 CYLINDER WAS DETERMINED TO BE BURNING OIL. CYLINDERS REMOVED AND BROKEN WRIST PIN FOUND.