As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT OWNER EXPERIENCED THREE TRANSMISSION CHIP LIGHT WARNING INDICATIONS. THE TWO CHIP DETECTORS WERE PULLED AND METAL SLIVERS WERE FOUND ON THE LOWER CHIP DETECTOR. THE PROCEDURES LISTED IN THE BELL 206L-SERIES MAINTENANCE MANUAL PARAGRAPH 66-14. SERVICEABILITY CHECK — TRANSMISSION WAS PERFORMED AFTER EACH OF THE WARNING INDICATIONS. THE TRANSMISSION WAS PARTIALLY DISASSEMBLED, THEN WITH A BORESCOPE, FOUND THE INPUT PINION HAD FATIGUE SPALLING. THIS PART WAS INSTALLED DURING THE LAST OVERHAUL AND WAS PURCHASED IN A USED SERVICEABLE CONDITION.