As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE TRANSITIONING OVER AIRPORT, TAIL ROTOR GEAR BOX CHIP LIGHT ILLUMINATED. DECLARED AN EMERGENCY AND LANDED. ON FINAL, CHIP LIGHT EXTINGUISHED. LANDING WAS WITH OUT INCIDENT. FELT NO UNUSUAL PRESSURE OR VIBRATION IN THE CONTROLS. MECHANIC FOUND AN INSIGNIFICANT AMOUNT OF METAL SHAVINGS ON THE CHIP DETECTOR WHEN IT WAS INSPECTED. FLUSHED THE GEARBOX, PERFORMED THE REQUIRED HOVER CHECK AND RETURNED TO SERVICE.