As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED ON APPROACH WHEN SELECTING FLAPS, RECEIVED LEADING EDGE SLAT DISAGREE EICAS MESSAGE. EMERGENCY DECLARED & FLIGHT LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. PROPERLY SECURED NR 1 FLAP SLAT ELECTRONICS UNIT IN RACK AND REPLACED NR 2 FSEU. SYSTEM GROUND CHECKED NORMAL.