Hmmmmm . . . six hours in a jetliner over the Pacific, at 38K', with burst eardrums, breathing 100% O2. Assuming the plane doesn't crash or the burst eardrums don't have some serious de-pressurizing imbalance on the brain that leads to immediate HACE and a quick trip to the pearly gates.
My first inclination is a highly confident "maybe". That's 9000 feet higher than Everest, where many well-acclimated people have passed away quite rapidly, especially in that "Death Zone" above 26,000 feet. In six hours under those circumstances, I'm pretty sure some would die and some would live - I just have no clue about the percentages. I also recall that even breathing 100% Os at extremely high elevation, the effective altitude effect on the body doesn't really drop that much (at least as far as frostbite risk).
Since your question was "can you live", not "would you live", I'll go with Kevin and say "yes". But not for long.
