As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 2248 - EN ROUTE DFW/ORD DURING CRUISE, EMERGENCY FLOOR LIGHTS AT RIGHT AISLE IN MID AND FIRST CLASS CABINS ILLUMINATED. AIRCRAFT PROCEEDED TO ORD AND LANDED WITHOUT INCIDENT. SYSTEM GROUND CHECKED NORMAL OPERATION. UNABLE TO DUPLICATE PROBLEM AND AIRCRAFT RETURNED TO SERVICE. (M)