As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ACCOMPLISHMENT OF THE EMERGENCY LIGHTING TEST IAW ALLEGIANT WORK CARD 335100-03-1-001 , FWD LH EPSU BATTERY WAS FOUND INOP. THE EPSU BATTERIES FWD 2H WAS REPLACED IAW A320 AMM TASK 33-51-38-000-002-A AND 33-51-38-400-002-A. AFTER NEW THE SYSTEM WAS FOUND IN SATISFACTORY CONDITION.