As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4191 THE CREW REPORTED THAT THE LIGHTED EMERGENCY EXIT MARKER ON THE RIGHT INTERIOR EXIT HATCH OVER THE WING DOES NOT ILLUMINATE. AIRCRAFT REMOVED FROM SERVICE. CLEANED ELECTRICAL CONNECTOR CONTACTS OF THE RIGHT OVERWING HATCH LIGHTED EMERGENCY MARKER REUSABLE SPLICES. AIRCRAFT RETURNED TO SERVICE.