Originally Posted by Intruder
The airplane can maintain FL410 until it runs out of fuel.
The limitation is the people on board. With a pressure-breathing oxygen mask, a typical pilot will likely remain conscious for 15-20 minutes or more.
Even with a diluter-demand (not necessarily a pressure-demand) regulator, shouldn't the flight deck crew be able to remain conscious until their oxygen supply runs out?
http://www.boldmethod.com/learn-to-f...xygen-systems/
Last edited by wanabee777; 14th Mar 2016 at 18:00.