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. ACFT GROUNDED. AUTOTHROTTLE CURRENT STATUS TEST PASSED. RAN SERVO MOTOR TEST, NO FAULTS. CURRENT STATUS SHOWS SEVERAL ASM-2 FAULTS AS PREVIOUSLY NOTED. REPLACED THE NR 2 AUTOTHROTTLE SERVO MOTOR AS A PRECAUTION DUE TO SEVERAL LOGGED FAILURES ON SEVERAL LEGS. OPS NORMAL IAW AMM 22-31-91.