As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOTHROTTLE WOULD NOT ENGAGE ON TAXI OUT. GROUNDED - YES. ACCOMPLISHED AUTOTHROTTLE BITE PROCEDURES CURRENT STATUS PAGE SHOWED NO FAULTS. INFLIGHT HISTORY SHOWED NO FAULTS LEGS 1-5. MODE ANNUNCIATION TEST PASSED NO FAULTS. INPUT DISCRETES NO FAULTS NOTED. DISENG/WARNING TEST PASSED. THROTTLE TEST PASSED NO FAULTS NOTED REF FIM 22-31 TASK 801.