As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - DUIRNG SCHEDULED PS CHECK, MAINTENANCE REPORTED VERBAL FROM A PILOT, THE EMERGENCY BATTERIES (EMERGENCY LIGHTS) WERE DEAD. MAINTENANCE REMOVED AND REPLACED THE BATTERY PACKS IN EMERGENCY POWER SUPPLY UNITS 43WL AND 73WL IAW ATR MM. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)