As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: DURING THE EMERGENCY POWER SUPPLY UNIT SYSTEM TEST A FAULT DISPLAYED FOR EMERGENCY POWER SUPPLY UNIT 10WL. MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 10WL (AALA202503136919) AND THE BATTERY (AALA202503138731) PER AMM 33-51-38. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO FAULTS NOTED.