As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING DESCENT, THE CREW RECEIVED A 'OB SPOILERON' CAUTION AND 'OB FLIGHT SPOILER' CAUTION MESSAGES.THE MDC REPORTED THE LT OUTBOARD MFS PCU JAM. CREW DECLARED AN EMERGENCY AND LANDED SAFELY WITH NO OTHER INCIDENTS REPORTED. FOLLOWING REPLACEMENT OF THE LT OUTBOARD MFS POWER CONTROLLER, THE AIRCRAFT RETURNED TO SERVICE.