As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - CREW REPORTED EICAS MESSAGE LEADING EDGE SLAT ASSYMETRY. EMERGENCY DECLARED LANDED ORD WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED BOTH STALL WARNING CARDS (MPN 285T110423) AND FLAP SLAT ELECTRONIC UNIT. SYSTEM GROUND CHECK NORMAL OPERATION.