CrashnBurn is right! It has to be done this way in a trigger:
Bob action ["eject", planeName]; unassignVehicle Bob
Just name the guy & the plane, oh and be sure to stretch out the axis of the trigger,
we don't wanna see ol' Bob passing by his bail spot while doing the female pilot up there
;D
So be sure to set the axis of the trigg. to some 60 x 350 or more
oh
and you can TURN triggers by pressing & holding down SHIFT while
you drag or slide the mouse (holding down the left button).
Just in case ya didn't know, buddy