As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 3437 - DURING TAKEOFF ROLL, CREW NOTED ENGINE NR 1 THRUST REVERSER DISAGREE MESSAGE ON EICAS. TAKEOFF WAS ABORTED AND AIRCRAFT WAS RETURNED TO THE GATE. MAINTENANCE ADJUSTED LOWER T/R ACTUATOR IAW EMB MM. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)