What was found
FLIGHT 7536 MSP TO IAD - ON APPROACH FLAPS AT 1 DEGREE, CREW RECEIVED SLAT FAIL AND AN EMERGENCY WAS DECLARED. AC LANDED WITHOUT INCIDENT. MAINTENANCE CLEARED INHIBITS ON SF-ACE'S, RELEASED BRAKES ON SLAT PDU'S, RAN SLATS SEVERAL TIMES AND COULD NOT DUPLICATE FAULT ON GROUND.