As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED ENGINE CHIP LIGHT ILLUMINATED. REMOVED UPPER AND LOWER CHIP PLUGS AND REMOVED A SMALL AMOUNT OF FLAKES. CLEANED THE PLUGS AND REINSTALLED. THE ENGINE WAS RUN AT 100 PERCENT FOR 30 MINUTES WITH NO ADDITIONAL WARNING LIGHTS. THE ACFT WAS RETURNED FOR SERVICE.