As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKE OFF ROLL AFTER PRESSING TOGA #1 THRUST LEVER ADVANCED AND #2 DID NOT. A/T DISENGAGED. RE-ENGAGED WITH SAME RESULT. GROUNDED - YES. COMPLETED BITE TEST OF AUTO THROTTLE AMM 21-31 TASK 801 RESET FCC-A AS PER TEST RESULTS, SECOND BITE TEST ATTEMPT PASSED.