As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX - FLT 3159 - DURING CRUISE FLIGHT CREW REPORTED AN UNCOMMANDED DEPLOYMENT OF SPOILERS AT HIGH SPEED RESULTING IN A 15 DEGREE BANK TO THE RIGHT. MAINTENANCE REMOVED AND REPLACED THE SPOILER CONTROL UNIT IAW EMB MM. AIRCRAFT WAS RELEASED FOR AND PASSED A FUNCTIONAL CHECK FLIGHT. AIRCRAFT WAS THEN RETURNED TO SERVICE (M)