As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI, TMCP DOES NOT ALLOW FOR POWER SETTING. ALSO RCVD A/T AMBER MESSAGE. A/C RETURNED TO BLOCKS (BTB). MTC DEFERRED THRUST MANAGEMENT SYSTEM PER MEL 22-30-1. PLACARDS INSTALLED. A/C RELEASED CAT I OPERATIONAL. A/C RETURNED TO SERVICE.