As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L ENG OIL PRESS WARNING IN FLIGHT. INTERMITTENT AT CLIMB OUT AND CRUISE. COMPLIED WITH QRH. PRESSURE INDICATED BETWEEN 28-35PSI INITIALLY. BEGAN TO DECREASE ON DESCENT AND WARNING BECAME PERSISTENT. FOLLOWED QRH AND SHUT L ENG DOWN. (FLIGHT 5801 - FILE OPEN)