What was found
ORD - FLT 4151 - NINE EMERGENCY FLOOR PROXIMITY LIGHTS IN AFT OF AIRCRAFT AND ONE EXIT SIGN ON AFT WALL DO NOT ILLUMINATE. REMOVED AND REPLACED BATTERY PACK 73WL. OPERATIONAL CHECK GOOD. (X)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ORD - FLT 4151 - NINE EMERGENCY FLOOR PROXIMITY LIGHTS IN AFT OF AIRCRAFT AND ONE EXIT SIGN ON AFT WALL DO NOT ILLUMINATE. REMOVED AND REPLACED BATTERY PACK 73WL. OPERATIONAL CHECK GOOD. (X)