As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PILOT FLYING ON TOUR FLIGHT, NOTICED AN ENGINECHIP LIGHT ILLUMINATED. PILOT IMMEDIATELY MADE PRECAUTIONARY LANDING. INSPECTED AIRCRAFT AND FOUND THAT ENGINE CHIP PLUG HAD A DEFECT. CLEANED CHIP PLUGS AND C/W OPERATIONAL CHECK AND FUNCTIONALLY CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE. (X)