What was found
THE EMERGENCY LIGHTS WOULD NOT TEST DURING PREDEPARTURE CHECK. MAINTENANCE REMOVED AND REPLACED THE AFT BATTERY PACK AND CHARGER AND OPERATION CHECKED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
THE EMERGENCY LIGHTS WOULD NOT TEST DURING PREDEPARTURE CHECK. MAINTENANCE REMOVED AND REPLACED THE AFT BATTERY PACK AND CHARGER AND OPERATION CHECKED GOOD.