As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLLOUT, THE NR 3 ENGINE REVERSER UNLOCK LIGHT ILLUMINATED. TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED THE NR 3 REVERSER AND FOUND IT TO BE NORMAL. DURING REVERSER OPERATION WITH GROUND AIR, REVERSER DEPLOYED NORMALLY BUT WOULD NOT GO BEYOND REVERSE IDLE. THE AIRCRAFT WAS RETURNED TO SERVICE WITH REVERSER ON MEL 78-1A.