As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOTHROTTLES WILL NOT ENGAGE. ACFT GROUNDED. AUTOTHROTTLE SYS LOGGED MULTIPLE FAULT MESSAGES 22-31412 & 22-31413, ELECTRONIC ENGINE CONTROL DATA INV. REF WDM 73-24-21. NO FAULTS LOGGED IN NR 1 & 2 DEU'S, R & R FCC A IAW AMM 22-11-33, OPS CHECK NORMAL.