As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOTHROTTLE CHECK ON TAXI WAS GOOD. RAN ENGINE TO 40 PERCENT, HIT TOGA AND AUTOTHROTTLE DISCONNECTED. REPEATED WITH SAME RESULT. ACFT GROUNDED. NO FAULTS LOGGED IN FAULT HISTORY. A/T CURRENT STATUS TEST PASSED REF MM 22-31-00. NO HISTORY PAST 30 DAYS.