What was found
DURING DESCENT THE POWER LEVERS CAME THROUGH THE FLIGHT IDLE GATE AND INTO BETA RANGE WITHOUT LIFTING THE POWER LEVER TRIGGERS. REPLACED ENGINE CONTROL QUADRANT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING DESCENT THE POWER LEVERS CAME THROUGH THE FLIGHT IDLE GATE AND INTO BETA RANGE WITHOUT LIFTING THE POWER LEVER TRIGGERS. REPLACED ENGINE CONTROL QUADRANT.