As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED AND ENGINE CHIP LIGHT AND PERFORMED AN UNSCHEDULED LANDING. MAINTENANCE FOUND 1 SLIVER ON THE UPPER GEARBOX CHIP PLUG. THE PLUG WAS CLEANED AND A PENALTY ENGINE RUN WAS PERFORMED IN REFERENCE TO THE ENGINE OMM. THE PLUGS WERE FOUND CLEAN AND THE AIRCRAFT WAS PLACED BACK IN SERVICE.