By LAW they have to have back-up power
https://www.faa.gov/documentLibrary/media/Order/6030_20_F%20with%20CHG%201%20incorporated.pdf
By LAW they have to have back-up power
https://www.faa.gov/documentLibrary/media/Order/6030_20_F%20with%20CHG%201%20incorporated.pdf
Bro, go back to whatever dumpster you came from..