As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BETWEEN FLIGHTS WHILE ON GROUND AT FLIGHT IDLE, THE PILOT RECEIVED A ENGINE CHIP LIGHT. MAINTENANCE FOUND A 1.5 MM PIECE OF CARBON ON LOWER ELETRICAL ENGINE CHIP DETECTOR. MAINTENACE PERFORMED ENGINE OIL RINSE, REPLACEMENT, FILTER CHANGE AND GROUND RUNS. CHIP DETECTOR REMAINED CLEAN. ENGINE PLACED IN A 25 HOUR MONITORING CYCLE.