To be clear, we don't yet know if the UPS flight lost hydraulics or not. There are several somewhat redundant hydraulic systems. (Also, as a result of the Sio

To be clear, we don't yet know if the UPS flight lost hydraulics or not. There are several somewhat redundant hydraulic systems. (Also, as a result of the Sioux City crash you linked, there were several ADs issued requiring changes to hydraulics in these airframes.)