What was found
SLAT FAIL AFTER TAKEOFF MOVING FLAP HANDLE FROM 1 TO 0 SLATS REMAINED AT 3 IN FLIGHT WHILE FLAPS OPERATED AS NORMAL RAN THRU QRH PROCEDURE DECLARED EMERGENCY AND RETURNED TO FIELD DID NOT LAND OVERWIEGHT OR HAVE HARD LANDING. AIRCRAFT REF EAML 108500517-1 SLAT/FLAP HAS BEEN DEACTIVATED TO #4 POS FOR FERRY PURPOSE // THIS AIRCRAFT REQUIRES INSPECTION FOR FERRY FLIGHT.REF EAML 108500516-1, TRANSFERED FROM EAML 108500515-1 PERFORMED GVI TO MECHANICAL COMPONENTS OF SLATS IAW AMM 27-81-00, NO PHYSICAL DISCONNECTS FOUND. MOVED SLATS/FLAPS TO #4 POS FOR FERRY IAW AMM 27-81-00. REF EAML 108500516-1, 108500517-1 FOR FURTHER ACTION TAKEN.