As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT REPORTED HEARING A GRINDING NOISE AND SHORTLY AFTERWARD NG WENT TO ZERO. ENGINE WILL BE TRANSPORTED TO MANUFACTURER FOR INVESTIGATION. MANUFACTURER WILL INVESTIGATE TO ESTABLISH ROOT CAUSE AND SUPPLEMENT THE REPORT ONCE THE INFORMATION IS AVAILABLE. (TC NR 20091215010)