As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE CHIP LIGHT ILLUMINATED DURING DESCENT FOR LANDING AT MX BASE. INSPECTED ENGINE CHIP PLUGS, FOUND METAL FUZZ ON ALL PLUGS, AND IN OIL FILTER. ALSO FOUND SAND MEDIA DEBRIS IN OIL FILTER. DURING THIS MAINT CYCLE, ENG OIL COOLER WAS REMOVED DUE LEAKAGE AT UPPER FITTING, FROM POSSIBLE CRACK. THE OIL COOLER WAS REMOVED, SENT TO FAA APPROVE OIL COOLER REPAIR SHOP AND RETURNED IN O/H CONDITION WITH 8130-3.