As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE DESCENT FROM THE ARRIVAL TO APPROACH, WE RECIEVED 2 CAUTION MESSAGES INBD SPOILERON AND INBD FLT SPOILERS. THESE MESSAGES OCCURRED AFTER THE FLIGHT SPOILER HANDLE WAS DEPLOYED. THE LT INBD SPOILERON WAS OUTLINED IN YELLOW WHILE THE RIGHT SPOILERON IN WHITE. INTERROGATED MDC, FOUND MDC MESSAGE LT INBD MFS PCU/ PCU JAM. PERFORMS POST 1 RESET. PERFORMED OPS CHECK IAW ETN-CR-27-093. OPS CHECK GOOD. OPEN TDMI 501T2745 TO R & R LT INBD MFSPCU IN 10 DAYS.