As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NAS - FLT 4739 - DURING TAKEOFF ROLL THRUST LEVERS AT THRUST SETTING, SPOILER DEPLOYED UNCOMMANDED. CREW REPORTED A TAKEOFF MISCONFIG MESSAGE AND WHLE TAXIING BACK TO GATE RECEIVED DAU 1 MISCOMPARE. MAINTNENANCE REMOVED AND REPLACED THE SPOILER CONTROL UNIT IAW EMB MM. OPS CHECK WAS SATISFACTORY AND AIRCRAFT WAS RETURNED TO SERVICE. (M)