As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE PROP WAS HARD TO TURN AND THE NL TURNED WITH THE PROP. WHEN THE NH ROTOR WAS ROTATED THE NL ALSO TURNED. THE ENGINE WILL BE REMOVED FOR REPAIR. MANUFACTURER WILL INVESTIGATE TO ESTABLISH ROOT CAUSE AND SUPPLEMENT THE REPORT ONCE THE INFORMATION IS AVAILABLE. (TC NR 20091221002)