As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE AT 22,000, OIL PRESSURE ON LT ENGINE DROPPED INTO PRECAUTIONARY RANGE. IN ACCORDANCE WITH THE QUICK REFERENCE HANDBOOK, FEATHERED ENGINE. DIVERTED INTO TYS AND LANDED WITHOUT INCIDENT. FOUND OIL LEVEL LOW FOR LT ENGINE. SERVICED OIL AND AIRCRAFT RETURNED TO SERVICE.