As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROX 20 MIN INTO CRUISE FLIGHT, THE LT LOW OIL PRESSURE LIGHT CAME ON . THE ENGINE WAS SHUT DOWN AS IT REACHED 50 PSI. ELECTED TO RETURN TO PLACE OF DEPARTURE AND A SUCCESSFUL LANDING WAS MADE. UPON STOPPING A LARGE QUANTITY OF OIL WAS FOUND UNDERNEATH LT ENGINE COWL. MAINTENANCE WAS DISPATCHED AND A COMPLETE REPORT WILL FOLLOW WITH FURTHER FINDINGS.