As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT, DESCENDING THROUGH FL250 WITH AUTOPILOT ON, AIRCRAFT ROLLED UNCOMMANDED LEFT THEN BACK TO THE RIGHT. AMBER SPOILER FAULT AND CYAN STAB TRIM FAULT CAS DISPLAYED. LEFT AND RIGHT OUTER SPOILERS WERE SLIGHTLY UP. APPROACH AND LANDING AT KLAX WITH FLAPS 20 WITH NO FURTHER INCIDENT. REPLACED # 8 MFS ACTUATOR IAW CH 300 AMM 27-62-01. RIG, OPS, AND LEAK CHECKS SATISFACTORY.