Serious incident to the Airbus A319 registered N521NK operated by Spirit on 15/02/2020 at Sacramento, California [Investigation led by NTSB / United States]

Preliminary data based on the notification from the United States authorities:

Aircraft lost all electronics while on approach to Sacramento International Airport. The flight crew switched to auxiliary power and landed uneventfully. The airplane was towed to the gate, and passengers deplaned normally.