What was found
DFW - AFTER CLIMBOUT CREW ATTEMPTED TO RETRACT FLAPS TO ZERO, FLAP INDICATOR NEEDLES FOR LEFT AND RIGHT FLAPS STUCK BETWEEN 0 AND ONE, WITH A SLAT ASSEMBLY. LIGHT AND SLAT ASSYMETRY EICAS MESSAGE. CREW ATTEMPTED TO LOWER FLAPS TO 20 FOR LANDING WITH NO INDICATION OR CHANGE INFLIGHT CHARACTERISTICS. EMERGENCY DECLARED, FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT LANDED WITH NO FLAPS. AIRCRAFT REMOVED FROM SERVICE. REPLACED LEADING EDGE SLAT SENSOR 303 AT THE NUMBER 9 RIGHT SLAT. SYSTEM GROUND CHECK NORMAL OEPRATION.