As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - DURING C-CHECK INSPECTION, THE AISLE PATH EMERGENCY LIGHTS WERE FOUND TO BE INOPERATIVE AT 31WL AND 33WL. MAINTENANCE REMOVED AND REPLACED THE AFFECTED EMERGENCY LIGHT BATTERY PACKS IAW ATR42-320 MM 33-51-21 RAI 10010-004, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (M)