What was found
ORD - OVERHEAD EMERGENCY LIGHTS AT ROWS 18 THROUGH 21 INOPERATIVE. REPLACED BATTERY PACK AT B4104 FOR OVERHEAD EMERGENCY LIGHTS AT ROWS 18 THROUGH 21. SYSTEM GROUND CHECKED NORMAL OPERATION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ORD - OVERHEAD EMERGENCY LIGHTS AT ROWS 18 THROUGH 21 INOPERATIVE. REPLACED BATTERY PACK AT B4104 FOR OVERHEAD EMERGENCY LIGHTS AT ROWS 18 THROUGH 21. SYSTEM GROUND CHECKED NORMAL OPERATION.