Losing 1 phase on a 3 phase bus is not good. Underloaded motors that are still turning will slow down and overheat. Fully loaded motors will stop. No motor will start. However, any unloaded or lightly loaded motor still turning will tend to re-create the 3rd phase assuming that there is not a bus overload in the system. DC devices that rely on rectification of the 3 phase AC line will suffer seriously increased ripple and in turn will return additional and perhaps unexpected harmonics to the bus. These are consequences of general 3 phase theory. I don't know how well it applies to aircraft.
After an excellent landing you can use the airplane again!