As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A ROUTINE OVERNIGHT SERVICE CHECK MAINTENANCE INSPECTION. MAINTENANCE REPORTED THAT THE EMERGENCY EGRESS PATH LIGHTING FROM ROW 25 TO ROW 32 WOULD NOT TEST. MAINTENANCE FURTHER REPORT THE REMOVAL AND REPLACEMENT OF AN EMERGENCY LIGHT POWER SUPPLY BATTERY PACK AT ROW 26 OVERHEAD. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED PER AMM 33-53-00. THE AIRPLANE HAS RETURNED TO SERVICE.