read an thought provoking idea this morning...if the plane did actually change altitudes, what are the possibilities they climbed to that absurd altitude to affect the cabin pressurization in some way to incapacitate the passengers? How does the timing of that work out with the supplemental oxygen duration for the passengers vs. pilots?

Can exceeding the service ceiling for the plane do, or allow a pilot to do, something to the cabin pressurization for 15 minutes?