What was found
UNCOMMANDED MOVEMENT OF BOTH CONTROL YOKES. APPROX 1 INCH FORE AND AFT. MORE PRONOUCED BELOW 200 KTS AND BELOW. NO NOTICABLE CHANGE IN ACFT PITCH. NO CHANGE WITH A/P ON OR OFF. YOKE CYCLING FORE AND AFT APPROX 1-2 SECONDS. NO CHANGE WITH FLAPS EXTENDED. NO NOTICABLE MOVEMENT ON GROUND. NO CHANGE IN POWER LEVER MOVEMENT. LANDING UNEVENTFUL. INSPECTED ELEVATOR AND ASSOCIATED COMPONENTS AND SYS, NO DEFECTS. REPLACED PITCH ACTUATOR CAPSTAN AND SERVO MOTOR. OPS CHECK FLIGHT GOOD. RETURNED TO SERVICE.