As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OTBD FLT SPOILERONS CAUTION. ON ARRIVAL FIRST OFFICER DEPLOYED FLT SPOILERONS & WE IMMEDIATE ROLLED TO RIGHT, RECEIVED THE CAUTION MESSAGES & THE AUTOPILOT CORRECTED THE ROLL AFTER THE OTBD SPOILERONS WENT OFFLINE. FLT 5177 FOUND RT OTBD MULTI-FUNCTION SPOILER SLOW TO DEPLOY. R & R THE RT WING OTBD MULTI-FUNCTION SPOILER PCU IAW AMM. PN 51200-11, SN ON MAL-1529 & SN OFF MAL-1549.