As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DECLARED A PAN PAN WITH ATC DUE TO A MAU 1 FAILURE. POSSIBLE LOSS OF SPOILERS, NOSEWHEEL STEERING. AIRCRAFT WAS ABLE TO CLEAR THE RWY WITHOUT A TOW. RESOLUTION CMC INTERROGATED, AVNX MAU 1A FAIL MSG + F.C. 45452143CMC. REPLACED MAU1 + NIC1 PROC MODULE & S/W LOAD C/O AS PER AMM 31-41-04- PB401. ALL I/B MSGS CLR`D, A/C RETURNED SERV. (TC# 20190523005)