As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COS - LEFT HAND ENGINE OIL CLOG LIGHT ILLUMINATED. SHUT DOWN ENGINE. SINGLE ENGINE TIME APPROXIMATELY THREE MINUTES. LANDED COS WITHOUT INCIDENT. FOUND LEFT HAND OIL FILTER FULL OF CARBON. DRAINED AND RESERVICED LEFT HAND ENGINE OIL. REPLACED LEFT HAND ENGINE OIL FILTER. REPLACED LEFT ENGINE OIL CLOG LIGHT PRESSURE SWITCH PER ENGINEERING.