As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT 10WL FORWARD FAIL EMERGENCY LIGHT TEST. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT (AALA202105249009) 10WL IAW AMM 33-51-38 AND BATTERY (AALA202105249032) 10WL IAW AMM 33-51-38