What was found
PILOT REPORTED LEFT ENGINE TORQUE WAS SLOW TO RESPOND THEN ACCELLERATED RAPIDLY. REPLACED BOTH FUEL CONTROL UNIT AND ENGINE DRIVEN FUEL PUMP (SUSPECTED POSSIBLE BEARING WASH-OUT). PERFORMED GROUND RUNS SATISFACTORY.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PILOT REPORTED LEFT ENGINE TORQUE WAS SLOW TO RESPOND THEN ACCELLERATED RAPIDLY. REPLACED BOTH FUEL CONTROL UNIT AND ENGINE DRIVEN FUEL PUMP (SUSPECTED POSSIBLE BEARING WASH-OUT). PERFORMED GROUND RUNS SATISFACTORY.