As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE CHIP LIGHT ILLUMINATED DURING TOUR FLIGHT. THE PILOT LANDED ACFT AND CALLED MAINTENANCE. MAINTENACE FOUND METAL FLAKE MEASURING LESS THAN .03125 ON UPPER AND LOWER ENGINE CHIP PLUGS. AFTER CLEANING THE PLUGS A 30 MINUTE GROUND RUN WAS PERFORMED AND THE PLUGS WERE RECHECKED AND FOUND CLEAN. THE ACFT WAS RETURNED TO SERVICE.