As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEN - LEFT OIL STRAINER CLOG LIGHT ILLUMINATED DURING CRUISE. REDUCED LEFT ENGINE TO IDLE AND LIGHT EXTINGUISHED. LIGHT CAME BACK ON DURING DESCENT. SHUT DOWN LEFT HAND ENGINE PER CHECKLIST. FOUND NO CARBON OR METAL DEBRIS IN OIL FILTER. REPLACED LEFT HAND ENGINE OIL STRAINER CLOG SWITCH PER MAINTENANCE MANUAL 79 35 01 2. REPLACED LEFT HAND ENGINE OIL FILTER. SYSTEM GROUND CHECKED NORMAL OPERATION.