What was found
PILOT REPORTED THAT DURING FLIGHT CONTROL CHECK ON TAXI OUT FOR DEPARTURE, THEY NOTED THAT THE AILERON TRIM WAS STUCK IN THE LT WING DOWN POSITION WHEN THEY ATTEMPTED TO ADJUST IT. THE PILOT RETURNED TO THE GATE. UPON MX INSPECTION, THE AILERON TRIM HINGE AND TRIM ACTUATOR WERE LUBRICATED, AND THE TRIM TAB TRAVEL WAS VERIFIED.