What was found
AFT LEFT EMERGENCY POWER SUPPLY UNIT BATTERY INOPERATIVE IAW EMERGENCY SYSTEM TEST. REPLACED AFT LEFT EMERGENCY POWER SUPPLY BATTERY IAW AMM 33-51-33. OPS TESTED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFT LEFT EMERGENCY POWER SUPPLY UNIT BATTERY INOPERATIVE IAW EMERGENCY SYSTEM TEST. REPLACED AFT LEFT EMERGENCY POWER SUPPLY BATTERY IAW AMM 33-51-33. OPS TESTED GOOD.