As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX-ON FLIGHT NUMBER 2437, CONFIG AILERON WARNING MESSAGE APPEARED. ABORTED TAKEOFF AND MESSAGE DISAPPEARED AFTER 1-2 SECONDS. MDC HAS NO REPORTS FOR AILERON TRIM SYSTEM. PERFORMED FAULT CONFIRM OF AILERON TRIM SYSTEM. OPERATIONAL TEST OF AILERON SYSTEM GOOD. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.