As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENROUTE, CREW REPORTED AN UNCOMMANDED MOMENTARY RUDDER INPUT. MX ACCOMPLISHED DFDR DOWNLOAD IAW JC 26T00031001, SHOWS NO ABNORMAL MOVEMENT OF THE RUDDER OR ACFT HEADING. ACCOMPLISHED TSM 27-26-00-810-801A. RESISTANCE AND INSULATION CHECK OF THE LVDT OF SERVO ACTUATOR, YAW DAMPER FAC1 AND FAC2 CHECKS OK. R & R FAC1 COMPUTER IAW AMM 22-66-34-400-002-A. ACCOMPLISHED SATISFACTORY OPS TEST OF THE AFS IAW AMM 22-96-00-710-001. ACFT OK FOR SERVICE.