As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT ENCOUNTERED LT AUTOFEATHER ACTIVATION WHEN REDUCING TO CLIMB POWER SETTING. PILOT RESUMED TO POWER LEVER SETTING AND PROP UNFEATHERED. PILOT SHUTOFF AUTOFEATHER SYS. UN COMMANDED AUTOFEATHER ACTIVATION WAS TROUBLESHOT TO UNSERVICEABLE LT AUTO-FEATHER SWITCH.