As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT OBSERVED AN ENGINE CHIP LIGHT ILLUMINATED WHILE CONDUCTING HIS PREFLIGHT. MECHANIC INSPECTED THE ENGINE CHIP PLUGS AND FOUND THEM COVERED WITH FINE METAL PARTICLES. AIRCRAFT WAS REMOVED FROM SERVICE. NO RECENT REPAIRS, INSPECTIONS, OR COMPONENT REPLACEMENTS ON THE ENGINE OR AIRFRAME. ALL ENGINE COMPONENTS OTHER THAN THE STARTER GENERATOR AND IGNITER PLUG ARE ORIGINAL EQUIPMENT.