Forget it.
Some jets will lose all but basic AC supplies and anyway the pilots should revert to being pilots and FLY their craft to the best landing they can make in the circumstances.
The F/O in the Kegworth OEI accident was allegedly busy reprogramming the FMS for their chosen destination, an activity which distracted one or both of them from the DIAGNOSIS.
Render as much assistance as is requested and within your ability, otherwise start the prayer beads rattling?