As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW DECLARED AN EMERGENCY. AFTER LEVEL OFF AT 280 AVNX MAU 3A FAIL WITH ASSOCIATED ADS 3A SPOILER AND FDR AFT FAIL. RELATED FAULT MESSAGE 452147CMC AND PROCEEDED WITH RELATED FIM 31-42-00-810-812-A. RESET NIC PROC 5 ALL MESSAGE CLEARED. MCC VERFIED NO 30 DAY HISTORY. NO FURTHER ACTION REQUIRED AT THIS TIME.