As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ENGINE POWER LEVER CABLE BALL JOINT ASSEMBLY CAME UNSCREWED AT RT ENGINE DISCONNECTING RT POWER LEVER CONTROL TO RT ENGINE DURING FLIGHT. THE COLLAR OF BALL JOINT ASSEMBLY IS STAKED TO PROVIDE A FRICTION LOCK BETWEEN OUTER COLLAR AND INNER NUT. SUBMITTER STATES THIS METHOD OF FRICTION LOCK DID NOT HOLD. TO HELP PREVENT THIS, APPLY LOKTITE TO THREADS UPON ASSEMBLY AND INSPECT BALL JOINT ASSEMBLY AT INSPECTIONS.