"W. D. Allen Sr." wrote in news:wQYRa.2853
:

44,000 ft altitude means only about 1/7 of the atmospheric
pressure at sea level. So it's hard to believe a person
could maintain consciousness without oxygen pressure
equipment to get to 49,500 feet.

The post didn't mention "no oxygen pressure equipment" just no pressue suit
and no pressurized cabin. Big difference.