As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOTHROTTLES WILL NOT STAY ENGAGED. CURRENT STATUS PASSED INFLIGHT FAULT SHOW MSG 22 31688 FOR PREVIOUS FLT. PERFORMED FIM 22 32 00 810 819 RAN SERVO MOTOR TEST NUMEROUS TIMES WITH NO FAULT. A/C REMAINS CATIIIA AUTOLAND & HGS QUALIFIED.