As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEN INFLIGHT T844/07AUG SNA TO ORD - LEFT ENGINE VIBRATION FOLLOWED BY LOW ENGINE GAS TEMPERATURE AND LOW OIL PRESSURE INDICATIONS. SHUT DOWN LEFT ENGINE AND LANDED DEN WITHOUT INCIDENT. SINGLE ENGINE TIME 19 MINUTES. FOUND GEARBOX CHIP DETECTORS CONTAMINATED WITH METAL. REPLACED NUMBER ONE ENGINE ON 07 AUGUST AT DEN. SYSTEM GROUND CHECKED NORMAL OPERATION.