As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - DURING OVERNIGHT CHECK, EMERGENCY FLOOR LIGHTS AFT OF PASSENGER SEAT ROW 22D TO AFT STAIRS FOUND INOPERATIVE. ACCOMPLISHED EMERGENCY LIGHT TEST WITH NO DEFECT FOUND. EMERGENCY FLOOR LIGHTS GROUND CHECKED, NORMAL OPERATION. UNABLE TO DUPLICATE PROBLEM. (X)