As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE PILOT REPORTED ENGINE PARAMETERS WANDERING. NH +-0.4% NL +- 0.2%, RPM +- 2 . MAINTENANCE INSPECTION FOUND POWER LEVERS ARMS LOOSE (LOW TORQUE/STILL COTTER PINNED ARMS RETIGHTEN AT ALL PIVOT POINTS AND RE-COTTER PINNED. AIRCRAFT RETURNED TO SERVICE FUEL CONTROL UNIT HAD BEEN INSTALLED FOR 1106 HR/1331 CY.