As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT RECEIVED A TAIL ROTOR GEARBOX CHIP LIGHT UPON DESCENT THAT COULD NOT BE CLEARED USING CHIP PULSE. A NORMAL LANDING WAS COMPLETED WITHOUT INCIDENT. UPON INSPECTION, FOUND TAIL ROTOR GREARBOX CHIP DETECTOR TO HAVE TWO LARGE OBJECTS OF DEBRIS ATTATCHED. AFTER REFERRING MM, FOUND DEBRIS SIZE AND SHAPE CATEGORY TO WARRANT GEARBOX REPLACEMENT DUE TO LIKELY GEAR WEAR. REPLACED GEARBOX ASSY ON ACFT WITH SERVICEABLE ASSY.