What was found
AFT CABIN EMERGENCY PWR SUPPLY 13WL FAILED CIDS EPSU TEST. / REMOVED AND REPLACED A/C AFT EPSU BATTERY (13WL) IAW AMM 33-51-38 PB 401. OPS CHECK GOOD."
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFT CABIN EMERGENCY PWR SUPPLY 13WL FAILED CIDS EPSU TEST. / REMOVED AND REPLACED A/C AFT EPSU BATTERY (13WL) IAW AMM 33-51-38 PB 401. OPS CHECK GOOD."