What was found
EWR - FLT 92 - EN ROUTE EWR-DFW AT 10,000 FEET IN CLIMB, RIGHT SIDE THRUST REVERSER UNLOCK LIGHT ILLUMINATED. LIGHT WENT OUT DURING CRUISE. ON DESCENT AT 5,000 FEET, RIGHT SIDE THRUST REVERSER UNLOCK LIGHT ILLUMINATED. LANDED DFW WITHOUT INCIDENT. REPLACED RIGHT SIDE THRUST REVERSER UPPER UNLOCK SWITCH. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)