As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF ROLL AT APPROXIMATELY 60 KNOTS, THE NR 3 ENGINE THRUST REVERSER UNLOCK LIGHT ILLUMINATED. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED THE THRUST REVERSER AND ADJUSTED A LOCK ACTUATOR. THE OPERATIONAL CHECK OF THE THRUST REVERSER WAS NORMAL AND THE AIRCRAFT RETURNED TO SERVICE.