As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED A CHIP LIGHT FOR THE TAIL ROTOR GEAR BOX. MECHANIC INVESTIGATED AND FOUND FOUR HAIR LINE SLIVERS ON THE CHIP PLUG ALL WHICH EXCEEDED LIMITS AS DESCRIBED BY THE MM. REMOVED THE GEAR BOX (PN 369D25400 SN 0295) AND INSTALLED SERVICEABLE GEAR BOX WITH SAME PN AND SN 0022220081. (AL05200402907)