As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT NR 4 PROP LOW OIL LIGHT ILLUMINATED DUE TO LOW OIL AND SUBSEQUENT PROP FEATHERING FAILURE RESULTING IN THE FLIGHT CREW PERFORMING AN ENGINE SHUT-DOWN IAW QRH. REPLACED FAILED STANDBY FILTER COVER GASKET P/N 69494R223.