As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF ROLL, THE NR 3 ENGINE THRUST REVERSER UNLOCK LIGHT ILLUMINATED. THE TAKEOFF WAS ABORTED AT 100 KNOTS AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE DEFERRED THE REVERSER INDICATION SYSTEM UNDER MEL 78-2A WITH THE REVERSER STOWED AND LOCKED. EXACT PART CAUSING PROBLEM TO BE DETERMINED.