As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE DESCENDING FOR THE APPROACH, THE LEFT ENGINE LOST OIL PRESSURE AND A PRECAUTIONARY SHUT DOWN WAS ACCOMPLISHED. THE PROBLEM WAS IDENTIFIED BY A DROP IN THE OIL PRESSURE GAUGE AND THE ILLUMINATION OF THE 'OIL LOW' ANNUNCIATOR. APPARENT CAUSE: LOSS OF OIL OUT THE BACK OF THE ENGINE. THE AIRCRAFT WAS LANDED SUCCESSFULLY AND WITHOUT INCIDENT.