As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE FLIGHT THE CREW RECEIVED A FLAP ASYMMETRY WARNING WITH NO FLAP INPUT. THE CREW ELECTED TO DIVERT FROM THE ORIGINAL DESTINATION OF KMDW TO KORD FOR THE LONGER RUNWAY SINCE A NO FLAP LANDING WAS REQUIRED. AN EMERGENCY WAS DECLARED OUT OF AN ABUNDANCE OF CAUTION. THEY LANDED WITHOUT INCIDENT. MAINTENANCE REPORTED TO THE AIRCRAFT AND THE ASYMMETRY LIGHT WAS EXTINGUISHED AND THE FLAP SYSTEM OPERATED WITH NO FAULTS.