As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS IN BASE MAINTENANCE: MAITNENACNE REPLACED UNSERVICEABLE BATTERY PACK POWER SUPPLY P/N: AD-D717-01-100 S/N: 166712 FOR SERVICEABLE BATTERY PACK P/N: AD-D717-01-100 S/N: ON FIN POSITION M33406 3L IN PASSENGER CABIN AND PERFORMED OPERATIONAL TEST IAW AMM 33-51-06-960-802.