[chmod775]

> It seems that she was just 0.4 seconds too late, otherwise she could have survived like Klemish.

Well, the plane was. When either co-pilot or pilot ejects, the other is ejected as well shortly after (on pretty much all planes). The delay is likely there to make sure it goes smoothly.

[LorenPechtel]

Ejection motors are powerful. You don't want to eject into the fire of somebody else's rocket and since you have no guidance system a simultaneous ejection would just be asking for a collision. Thus a delay is necessary in a front/back situation. (You could build a system for side-by-side simultaneous ejection, design the seats to fly a little to the outside.)