As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - SEAT MOUNTED EMERGENCY LIGHTS IN FORWARD SECTION IS INOPERATIVE. REPLACED BATTERY PACKS AT M33401 AND M33404 AND REPLACED SOCKETS AT SEAT 20C FOR SEAT MOUNTED EMERGENCY LIGHTS IN FORWARD SECTION. SYSTEM GROUND CHECKED NORMAL OPERATION.