As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT HAD AN ENGINE CHIP LIGHT ILLUMINATION DURING FLIGHT. HE PERFORMED AN UNEVENTFUL UNSCHEDULED LANDING. MX FOUND A 1MM WIRE (FILIMENT) ON THE LOWER ENGINE ELECTRICAL DETECTOR. MX PERFORMED A DRAIN AND RINSE OF THE OIL SYS AND FOUND ALL PLUGS CLEAN AND RELEASED ACFT BACK INTO SERVICE.