As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAIL ROTOR CHIP CAUTION ILLUMINATED ON CAD DURING POWER UP. REMOVED TAIL ROTOR CHIP PLUG & FOUND ONE TINY SLIVER APPROXIMATELY THE SIZE OF A HAIR & 1 - 2 MM IN LENGTH. CLEANED CHIP PLUG & REINSTALLED. PERFORMED OPERATIONS CHECK & 10 MINUTE GND RUN WITH NO REOCCURRENCE. ACFT RETURNED TO SERVICE.