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I was reading about the cabin pressurisation mechanism from Wikipedia and another article here. According to both of them, the aircraft's engine plays a vital role in the pressurisation process.

My question is:

I have come across many air crash investigation articles mentioning that all the engines of an aircraft had failed, but the pilots were able to glide the aircraft and safely land it with no casualties. How is it possible for everyone onboard the aircraft to survive without cabin pressurisation (with all engines out) ?

UPDATE: What if a safe landing area is a bit too far? After losing altitude, the aircraft can't obviously gain altitude. Won't the plane crash due to low altitude (the descent is fast) gliding?So, isn't it better to maintain (sufficient) altitude to reach an emergency destination? I hope the altitude can be maintained provided cabin pressurisation is intact. But, how is this achieved in commercial aircrafts?

I was reading about the cabin pressurisation mechanism from Wikipedia and another article here. According to both of them, the aircraft's engine plays a vital role in the pressurisation process.

My question is:

I have come across many air crash investigation articles mentioning that all the engines of an aircraft had failed, but the pilots were able to glide the aircraft and safely land it with no casualties. How is it possible for everyone onboard the aircraft to survive without cabin pressurisation (with all engines out) ?

UPDATE: What if a safe landing area is a bit too far? After losing altitude, the aircraft can't obviously gain altitude. Won't the plane crash due to low altitude (the descent is fast) gliding?So, isn't it better to maintain (sufficient) altitude to reach an emergency destination? I hope the altitude can be maintained provided cabin pressurisation is intact. But, how is this achieved in commercial aircrafts?

I was reading about the cabin pressurisation mechanism from Wikipedia and another article here. According to both of them, the aircraft's engine plays a vital role in the pressurisation process.

My question is:

I have come across many air crash investigation articles mentioning that all the engines of an aircraft had failed, but the pilots were able to glide the aircraft and safely land it with no casualties. How is it possible for everyone onboard the aircraft to survive without cabin pressurisation (with all engines out) ?

The following paragraph is JörgWMittag 's comment:

"This creates an interesting dilemma, though: do you start an emergency descent without engines? Or would you rather not lose altitude you know you never can get back? Obviously, you need to keep the passengers alive, but do you need to keep them conscious?"

I was reading about the cabin pressurisation mechanism from Wikipedia and another article here. According to both of them, the aircraft's engine plays a vital role in the pressurisation process.

My question is:

I have come across many air crash investigation articles mentioning that all the engines of an aircraft had failed, but the pilots were able to glide the aircraft and safely land it with no casualties. How is it possible for everyone onboard the aircraft to survive without cabin pressurisation (with all engines out) ?

UPDATE: What if a safe landing area is a bit too far? After losing altitude, the aircraft can't obviously gain altitude. Won't the plane crash due to low altitude (the descent is fast) gliding?So, isn't it better to maintain (sufficient) altitude to reach an emergency destination? I hope the altitude can be maintained provided cabin pressurisation is intact. But, how is this achieved in commercial aircrafts?

I was reading about the cabin pressurisation mechanism from Wikipedia and another article here. According to both of them, the aircraft's engine plays a vital role in the pressurisation process.

My question is:

I have come across many air crash investigation articles mentioning that all the engines of an aircraft had failed, but the pilots were able to glide the aircraft and safely land it with no casualties. How is it possible for everyone onboard the aircraft to survive without cabin pressurisation (with all engines out) ?

I was reading about the cabin pressurisation mechanism from Wikipedia and another article here. According to both of them, the aircraft's engine plays a vital role in the pressurisation process.

My question is:

I have come across many air crash investigation articles mentioning that all the engines of an aircraft had failed, but the pilots were able to glide the aircraft and safely land it with no casualties. How is it possible for everyone onboard the aircraft to survive without cabin pressurisation (with all engines out) ?

The following paragraph is JörgWMittag 's comment:

"This creates an interesting dilemma, though: do you start an emergency descent without engines? Or would you rather not lose altitude you know you never can get back? Obviously, you need to keep the passengers alive, but do you need to keep them conscious?"