As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AHRS1 FAIL, AP/FD FAIL, YAW DAMP FAIL. EMERGENCY DECLARED AND DECENT DUE TO CREW PERCEIVED AHRS2 FAIL THAT WOULD CAUSE VENTRAL RUDDER FAIL AND DUTCH ROLL TENDENCIES. AHRS1 RESTARTED AND ALL SYSTEMS RETURNED TO NORMAL. CMC EVALUATION AND FIM TASK FOR AHRS1 DETERMINED TO BE TRANSITORY.