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 IN CRUISE, REDUCING TO ZERO UNCOMMANDED DURING DESCENT. POWER WAS RECOVERED USING THE FUEL CONTROL MANUAL OVER-RIDE SYSTEM. ON A SUBSEQUENT START THE ENGINE ACCELERATED UNCOMMANDED. SUBSEQUENT INSPECTION REVEALED A PRE-SB1561 FCU BEARING CAGE FRACTURE. (TC NR 20061006019)