posted on Oct, 16 2004 @ 08:16 AM
Just a Cliff Claven moment on this. The crew hand-over is completed the minute the Soyuz seat cushions are changed out. Since the Soyuz lands on
land instead of water, special seat cushions are required to help protect the crew's bodies from the hard impact. Each cushion is made specifically
for that crewmember's body. SO, the seat cushion mandates who can sit there.
If there were a catastrophic problem on ISS right now, the three crewmembers who just arrived would be the only ones who could make an emergency
egress in the Soyuz if the cushions have not been exchanged. If the cushions HAVE been exchanged, then the two replacing crewmembers would be
required to stay on ISS while the others left.
Just another gee-whiz moment for ya.