What was found
DURING TAXI OUT RECEIVED NO TAKEOFF WITH CHECK AILERON ON PREFLIGHT PAGE. AILERON SYNOPTIC INDICATED FULL RT AMBER TRIANGLE THAT CHANGED TO AMBER X ON AIL SYNOPTIC DISPLAY. UNABLE TO MOVE AIRLERON TRIM WITH SWITCH. PERFORMED ARES DOWNLOAD, PERFORMED VISUAL INSP OF ACTUATOR & WIRING, NO DEFECTS NOTED. CHECKED WIRING BETWEEN ACTUATOR & GEA#3, NO DEFECTS NOTED. SUSPECT ACTUATOR AT FAULT. R & R TRIM ACTUATOR. AILERON TRIM OPS CHECKED GOOD IAW AMM 27-13-05. AFTER AILERON TRIM ACT R & R, NOTED RT AILERON STILL HAD AMBER X ON FLT CONTROL SYNOPTICS. PERFORMED MINOR ADJUST TO MOUNT OF AILERON POSITION SENSOR. AILERON POSITION READING CORRECT & AMBER X CLEARED IAW AMM 27-10-25.