As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FAULTS -EMERGENCY POWER SUPPLY UNIT LEFT AND EMERGENCY POWER SUPPLY UNIT LEFT FORWARD. REPLACED LEFT EMERGENCY POWER SUPPLY UNIT AND LEFT FORWARD EMERGENCY POWER SUPPLY UNIT (AALA202201180216) PER AMM 33-51-38. OPERATION NORMAL.