As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO THROTTLES WILL NOT REMAIN ENGAGED. PERFORMED A/T BITE TEST FOUND F/C 22 31687 ASM NR 1 PER FTD 22 039 AND MT 22 039 CYCLED CB FOR AUTOTHROTTLE DC1. PERFORMED A/T SERVO MOTOR AND CURRENT STATUS TEST NO FAULTS. ALSO TORQUE MOTOR TEST NO FAULTS.