As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 7596 - MTJ-DEN - AFTER DEPARTURE FROM MTJ, CREW FELT A VIBRATION IN THE LEFT ENGINE AND TORQUE AND PROP RPM DROPPED BELOW STANDARDS. CREW PERFORMED ENGINE SHUTDOWN AND CALLED FOR EMERGENCY EQUIPMENT ON THE FIELD. AIRCRAFT RETURNED TO FIELD WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED POWER SECTION. OPS CHECK GOOD, AIRCRAFT WAS RETURNED TO SERVICE. (M)