As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNCOMMANDED LEFT FLIGHT SPOILER RETRACTION IN FLIGHT WITH SPOILERS EXTENDED IN DESCENT. LEFT SPOILER RETRACTED, DEPLOYED AND RETRACTED RAPIDLY (3 TIMES) IN 2 SECONDS - ROLLING THE AIRCRAFT VIOLENTLY 10/30/ APPROXIMATELY 40 DEGREES TO RIGHT. FLIGHT SPOILER CAUTION THEN DISPLAYED. REMOVED AND REPLACED NR 1 SECU IAW AMM 27-61-05, OPERATIONS CHECK GOOD.