As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) MAIN ROTOR GEARBOX CHIP DETECTOR METAL CONTAMINATION. THERE WAS NO METAL IN THE OIL FILTER. INVESTIGATION FOUND THE CONTAMINATION TO BE WITHIN LIMITS AND FOLLOWING A GROUND RUN AND HOVER CHECKS, THE AIRCRAFT WAS RETURNED TO SERVICE.