As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - CREW REPORTED ON APPROACH TRAILING EDGE FLAP ASSYEMTRY INDICATION. ACCOMPLISHED QRH PROCEDURE AND RESET FLAP HANDLE TO 5 DEGREES DETENT. EMERGENCY DECLARED FLIGHT RETURNED ORD LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED FLAP SLAT ELECTRONIC UNIT AND FLAP INDICATOR. SYSTEM GROUND CHECK NORMAL OPERATION.