As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOTHROTTLE SWITCH WILL ONLY ENGAGE FOR 3-5 SEC THEN TURNS OFF. AUTO THROTTLE WILL NOT ENGAGE. ACFT GROUNDED. A/T LOGGED 22-31675 T/O SET LOW. ACCOMPLISHED FIM 22-31 TASK 817, FOUND FAULT TO BE INTERMITTENT. CURRENT STATUS TEST PASSED.