As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A/T DISENGAGED INFLIGHT WOULD NOT REENGAGE. GROUNDED - YES. CHECKED THE A/T FAULT HISTORY AND FOUND FAULT 22-31687 (ASM1) RECORDED ON TWO LEGS ON 9/10/18. PERFORMED FIM 22-31 TASK 805 WITH NO ACTIVE FAULTS NOTED. PERFORMED AN A/T OP-TEST PER AMM 22-31-00-710-801. CHECKS GOOD. PERFORMED AN ASM OP TEST PER AMM 22-31-00-710-802. CHECKS GOOD.