As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED. FORWARD AND AFT EMERGENCY POWER SUPPLY UNIT FAULTING, LEFT MID EMERGENCY POWER SUPPLY UNIT BATTERY FAULT. REMOVED AND REPLACED FORWARD (AALA202009229004) AND AFT (AALA202009229022) EMERGENCY POWER SUPPLY UNIT, PER AMM 33-51-38-400-001-A. REMOVED AND REPLACED LEFT MID EMERGENCY POWER SUPPLY UNIT BATTERY, PER AMM 33-51-38-400-002-A.