As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING GROUND INSPECTION, WHEN SELECTED ON, THE EMERGENCY LIGHTS AT ROW 8 AND THE EXTERNAL OVERWING EXIT LIGHTS WOULD NOT STAY ON. MAINTENANCE REMOVED AND REPLACED THE EMERGENCY LIGHT BATTERY PACK IN THE NR 3 POSITION. OPERATIONAL CHECKS GOOD. AIRCRAFT OK FOR SERVICE.