As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNCOMMANDED FEATHER DURING CRUISE WITH CLEAR ATMOSPHERIC CONDITIONS, THE ENGINE HAD AN UNCOMMANDED FEATHER. THE ENGINE WAS SHUTDOWN AND SUBSEQUENTLY WAS RESTARTED SUCCESSFULLY. CREW ELECTED TO RETURN TO ORIGIN AND DECLARED EMERGENCY. ACFT LANDED WITH BOTH ENGINES RUNNING NORMALLY.