As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION FOUND THE BATTERY HOLDER ASSEMBLY FAILED THE EMERGENCY LIGHTING SYSTEM OPERATIONAL CHECK. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE BATTERY HOLDER ASSEMBLY P/N 2013-1A S/N 68832. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.