As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS ON DURING DEPLANE, RAN DOWN BATTERIES FOR EMERGENCY LIGHTS. AIRCRAFT REMOVED FROM SERVICE. MAINTENANCE REMOVED AND REPLACED NR 1, 3 AND 4 EMERGENCY POWER PACKS AND BATTERIES FOUND NR 2 TO BE OKAY. OPERATIONAL CHECK IAW EMB MM 33-50-00 AND PARTS REPLACED IAW EMB MM 33-50-04. AIRCRAFT WAS RETURNED TO SERVICE.