As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO THROTTLE INITIALLY ARMED, THEN DISCONNECTED WHILE TAKING ACTIVE RUNWAY AND UNABLE TO REARM AUTOTHROTTLE. ACFT GROUNDED. REMOVED & REPLACED FCC-A IAW AMM 22-11-33-00-801/-400-801, RESPECTIVELY. PERFORMED AMM TASK 22-31-00-710-801. AUTOTHROTTLE SYS CHECKED GOOD. NO FAULTS NOTED. OPS NORMAL.