As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT WITH AUTO PILOT ENGAGED, ACFT ROLLS LT AND RT APPROX EVERY 30-45 SECOND , ATTEMPTING TO MAINTAIN CRUISE. WHEN AUTO PILOT IS DISENGAGED, ACFT CONTINUES TO ROLL UNCOMMANDED MAINLY TO THE LT, APPROX EVERY 30-45 SECONDS. R & R ROLL ACTUATOR IAW AMM TASK 2-11-16-000-801 AND 2-11-16-400-801 , OPS TEST OF PITCH AND ROLL GOOD ( ACTUATORS ) OPS CHECK FLIGHT GOOD. RETURNED TO SERVICE.