What was found
DURING FLIGHT 3406 AT 36000 SHORTLY ON DECENT INTO DFW THRUST LEVER AT IDLE WE FELT SPOILERS OPEN & GOT, SPOILERS FAIL, MSG. COMPLIED WITH, SPOILER FAIL, CHECKLIST & INADVERTENT SPOILER OPEN IN FLIGHT CHECKLIST UPON MOVING THRUST LEVER ABOVE IDLE MSG WENT AWAY. R & R SPOILER CONTROL UNIT IAW MM 27-63-03. OPERATIONS CHECKED GOOD IAW 27-63-01. R & R SPOILER CONTROL UNIT IAW MM 27-63-03 OPERATIONS CHECKED GOOD IAW 27-63-01.