As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOTHROTTLE WILL NOT STAY ENGAGED. T/S PER FIM REF 22 31 TASK 805 NO REPORTED FAULTS. ALSO PERFORMED AUTOTHROTTLE SERVO MOTOR TEST VIA CDU SEVERAL TIMES NO FAILURES. TESTED PER FIM 22 31 TASK 810 ALL TESTS PASS AND NO FLIGHT CREW REPORT OF A/T DISCONNECT. SUCCESSFUL GRD VERIFICATION TEST PERFORMED.