As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE CHIP LIGHT DURING FLIGHT. MAINTENANCE FOUND 4 FLAKES ON UPPER AND LOWER PLUGS WITHIN PARAMETERS. PERFORMED AN OIL SYSTEM DRAIN, FLUSH AND FILTER CLEAN AND CHANGE AND GROUND RUN. CHIP PLUGS WERE CLEAN UPON REINSPECTION. AIRCRAFT WAS RETURNED TO SERVICE.