What was found
EPSU BATTERY FAILED MCDU TEST (FIN 13WL) / REMOVED AND REPLACED EPSU BATTERY(FIN 13WL) IAW AMM 33-51-38-000-002-A/33-51-38-400-002-A; OP'S CHECK GOOD"
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
EPSU BATTERY FAILED MCDU TEST (FIN 13WL) / REMOVED AND REPLACED EPSU BATTERY(FIN 13WL) IAW AMM 33-51-38-000-002-A/33-51-38-400-002-A; OP'S CHECK GOOD"