As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 572 PBI-HPN, CREW DECLARED EMERGENCY DUE TO AVNX MAU 3A FAIL EN ROUTE. ACCOMPLISHED FIM TASK 31-42-00-810-812A. MESSAGE CLEARED. A/C OK TO CONTINUE. ON 8/5/12 FLT 585 MAU 3 FAILED TWICE IN CLIMBOUT AND CRUISE. REMOVED AND REPLACED MAU 3 NIC 1 AND MAU 3 PWR SUPPLY 1. ON 8/6/12 FLT 1791 MAU 3 FAIL EICAS MSG -REPEATED.