What was found
PDX - THE AFT 3 CABIN EMERGENCY LIGHTS WILL NOT ILLUMINATE. REMOVED AND REPLACED THE NUMBER 7 BATTERY PACK. OPERATIONAL CHECK IS GOOD. AIRCRAFT RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PDX - THE AFT 3 CABIN EMERGENCY LIGHTS WILL NOT ILLUMINATE. REMOVED AND REPLACED THE NUMBER 7 BATTERY PACK. OPERATIONAL CHECK IS GOOD. AIRCRAFT RETURNED TO SERVICE.