As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ENGINE TORQUE WAS SEEN TO FLUCTUATE DURING CLIMB. DURING DESCENT ENGINE TORQUE INCREASE UNCOMMANDED AND THE ENGINE WAS SHUTDOWN IN FLIGHT. SUBSEQUENT INVESTIGATION REVEALED CONTAMINATION OF THE PNEUMATIC SECTION OF THE FUEL CONTROL UNIT. (TC NR 20060906021)