What was found
ORD - DURING OVERNIGHT MAINTENANCE AT OVERWING EXITS THREE OVERHEAD AISLE EMERGENCY EXIT LIGHTS COME ON WITH POWER OFF. REPLACED BATTERY PACK. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ORD - DURING OVERNIGHT MAINTENANCE AT OVERWING EXITS THREE OVERHEAD AISLE EMERGENCY EXIT LIGHTS COME ON WITH POWER OFF. REPLACED BATTERY PACK. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)