As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ENGINE EXPERIENCED UNCOMMANDED FEATHER WHILE ON THE GROUND. REPLACED RIGHT TORQUE SIGNAL CONDITIONER AND PCU WITH A SERVICEABLE UNIT IAW MM 61-00-00. SEE RII 61-900-1003. OPERATIONAL CHECKS GOOD. TORQUE SIGNAL CONDITIONER, P/N OFF: 30005-0000-52 S/N OFF: 1324.