As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAINTENANCE REPORTED EMERGENCY CEILING LIGHTS INOPERATIVE AFT CABIN FROM SEAT ROW 31 TO AFT LAVATORIES. MAINTENANCE REMOVED AND REPLACED AFT CABIN BATTERY PACK. SYSTEM OPERATIONALLY CHECKS GOOD IAW MM 33-53-00. AIRCRAFT RETURNED TO SERVICE.