What was found
FLT 904 ORD-JFK - SLAT FAIL, EICAS MESSAGE ON APPROACH TO JFK GOING FROM SLAT/FLAPS POSITION 0 TO 1, CREW RAN QRH PROCEDURE. AIRCRAFT LANDED WITHOUT INCIDENT. MX TROUBLESHOT PER TSM 27-81-00-810-802A INSPECTED LEFT AND RIGHT WING ALL 8 SLAT TORQUE LIMITER TRIP INDICATORS, NO FAULTS FOUND. TRANSITORY CONDITION AS PER STEP 37 IN FIM. REMOVED AND REPLACED SLAT FLAP ACTUATOR CONTROL ELECTRIC UNIT IAW AMM 27-53-02, AS PRECAUTIONARY. OPS CHECK GOOD. AIRCRAFT REINSTATED BACK INTO SERVICE.