No oxygen problems that I recall. I don’t think there’s a hypoxia risk until 10K feet? Cold I’m sure because it was like flying with a window open. The heaters for the cabin air probably couldn’t keep up.

[–] misteloct@lemmy.dbzer0.com 16 points 1 week ago

Hypoxia risk is usually around 14k feet. 7k feet is like skiing town tree line altitude, cold as fuck but not dangerous. Fascinating story, thanks for sharing.

[–] Anivia@feddit.org 4 points 1 week ago (1 children)

The heaters for the cabin air probably couldn’t keep up.

This made me curious if planes use "free" excess heat from the jet engines, same as a car would, or if they need to burn fuel to heat the cabin. And it turns out the latter is the case, so not only could the heaters probably not keep up, attempting to even do so would have wasted a ton of fuel.

[–] Nougat@fedia.io 2 points 1 week ago

Fuel that was already being burned at a high rate because of flying down in thicker air.