What was found
FLT 607 PWM-JFK, CREW DECLARED EMERGENCY DUE TO SLAT FAIL EICAS MESSAGE IN FLIGHT. AFTER QRH PROCEDURES, SLAT INDICATOR READ "0" AND FLAPS WERE SELECTED AND INDICATED "2". PERFORMED FIM TASK 27-81-00-810-807A. ALSO REMOVED AND REPLACED NR 2-3 SLAT SKEW SENSOR RT IAW AMM 27-83-01. OPS CHECK ACCOMPLISHED, NO FAULTS NOTED.