As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EFD - DURING LINE CHECK INSPECTION, THE CENTER AND AFT AISLE PATH EMERGENCY LIGHTS WERE FOUND DIM. MAINTENANCE REMOVED AND REPLACED THE AFFECTED BATTERY PACKS IAW WITH ATR42-320 JIC 33-51-21, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (X)