As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION IAW ALLEGIANT TASK 335100-03-1-001 UPPER FUSELAGE PAX CABIN EPSUBATTERY FAILED AT FOLLOWING POSITIONS FWD LH ,EMER LH AND AFT LH. DUE THIS CONDITION WASREPLACED 3 EA EPSU BATTERY ON POSITIONS FWD LH,EMER LH AND AFT LH IAW A320 AMMTASK33-51-38-400-002-A . AFTER THE SYSTEM TEST WAS FOUND OK