As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT, 4 MINUTES AFTER DEPARTURE TAIL ROTOR CHIP CAUTION SEGMENT ILLUMINATED. PILOT PERFORMED EMERGENCY PROCEDURE IAW FMS 9.2-15-5. TAIL ROTOR CHIP REMAINED ILLUMINATED. PILOT LANDED WITHOUT FURTHER INCIDENT, ACFT SHUTDOWN. MECHANIC REMOVED THE TAIL ROTOR GEARBOX CHIP DETECTOR AND FOUND NO CHIPS, JUST DIRT. CLEANED CHIP DETECTOR, DRAINED AND FLUSHED THE GEARBOX, RE-INSTALLED THE CHIP DETECTOR AND SERVICED THE GEARBOX. A TEN MINUTE GROUND RUN WAS THEN PERFORMED WITH NO DEFECTS NOTED. THE ACFT WAS THEN APPROVED FOR RETURN TO SERVICE.