What was found
FLIGHT 3203 - CMH-IAH - AT FL360, EXPERIENCED AN UNCOMMANDED FLAP DEPLOYMENT OF UP TO 8 DEGREES IN FLIGHT WITH THE FLAP SELECTOR IN THE 0 DEGREE POSITION. IMMEDIATELY REDUCED AIRSPEED AND INITIATED A DESCENT TO 15,000 FEET. IN DESCENT, THE FLAPS CONTINUED TO OSCILLATE BETWEEN 3-8 DEGREES EXTENSION. THE FLAP DISPLAY WAS WHITE IN COLOR INDICATING A POSSIBLE ASSYMETRIC CONDITIONS, HOWEVER THAT FLIGHT CHARACTERISTIC WAS NOT NOTED. DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE PDU.