As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) MAIN GEARBOX CHIP LIGHT CAME ON DURING FLIGHT.PILOT LANDED AND INSPECTED THE MGB CHIP PLUG. NO METAL FOUND. HE CALLED THE BASE AND WE ADVISED HIM TO CHECK THE MAST BEARING CHIP DETECTOR AND CHECK TO MAKE SURE THE LIGHTS STILL WORKED. NO METAL FOUND. AIRCRAFT FINISHED THE DAY AND WAS CHECKED AGAIN UPON RETURN. NO METAL FOUND.