What was found
ORD - FLT 4055 - SECTION OF EMERGENCY LIGHTS INOPERATIVE. REPLACED BATTERY PACK 29WL. OPS CHECK GOOD. AIRCRAFT WAS RETURNED TO SERVICE. (X)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ORD - FLT 4055 - SECTION OF EMERGENCY LIGHTS INOPERATIVE. REPLACED BATTERY PACK 29WL. OPS CHECK GOOD. AIRCRAFT WAS RETURNED TO SERVICE. (X)