The default key for cycling through targetted systems is 'Y'.
This is much easier than trying to use the UI panel in the heat of battle.
I find it far faster to use the UI panel to target the powerplant on an anaconda. (In a vulture there is no need to target subsystems on anything smallerThe default key for cycling through targetted systems is 'Y'.
This is much easier than trying to use the UI panel in the heat of battle.