What was found
DFW - FLT 3589 - EMERGENCY LIGHT IN MIDDLE OF AISLE IS INOPERATIVE. REPLACED EMERGENCY POWER SUPPLY 20LN. AIRCRAFT WAS RETURNED TO SERVICE. (X)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DFW - FLT 3589 - EMERGENCY LIGHT IN MIDDLE OF AISLE IS INOPERATIVE. REPLACED EMERGENCY POWER SUPPLY 20LN. AIRCRAFT WAS RETURNED TO SERVICE. (X)