As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUSPECTED AUTOFEATHER - PILOTS REPORTED THE RT PROP AUTOFEATHERED IN FLIGHT WHILE REDUCING TORQUE FROM 2500 LBS TO 500 LBS. TOR4QUE LEVELS WERE EVEN THROUGHOUT PWR REDUCTION. MX ADJUSTED THE FLIGHT IDLE TORQUES ON THE RT AND LT ENG IAW MM 76-10-00. OPS CHECKS OF THE AUTOFEATHER SYS WERE PERFORMED IAW MM 61-21-00. ALL CHECKS WERE GOOD. RII INSPECTIONS C/W IAW TASKCARD 4.3.13.