As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FOUND EMERGENCY SEAT MOUNTED LIGHTS FROM FORWARD CABIN TO SEAT ROW 21 INOPERATIVE. REPLACED BATTERY PACKS AND MODULES AT AB51 AND AB52 FOR EMERGENCY SEAT MOUNTED FROM FORWARD CABIN TO SEAT ROW 21. SYSTEM GROUND CHECKED NORMAL OPERATION.