There is a reason why they tell you to put your oxygen mask on first.

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[ARCHIVED THREAD] - There is a reason why they tell you to put your oxygen mask on first. (Page 1 of 3)

Posted: 5/24/2017 9:53:06 PM EDT

the other person is weaker.

Posted: 5/24/2017 10:06:17 PM EDT

[#1]

You have less than a minute of consciousness at cruising altitude oxygen levels.

So, you know, go first.

Posted: 5/24/2017 10:08:07 PM EDT

[#2]

club plane scene

https://www.youtube.com/watch?v=QY7fODFm3P8

Posted: 5/24/2017 10:09:11 PM EDT

[#3]

Quoted:
the other person is weaker.

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True

Posted: 5/24/2017 10:10:08 PM EDT

[#4]

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Quoted:
You have less than a minute of consciousness at cruising altitude oxygen levels.

So, you know, go first.

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And once an emergency decent is initiated, you'll be back in "breathable" air in a couple of minutes anyway

If I'm ever on an airplane that depressurizes (in the back/not flying) I fully intend to forego the mask and treat it like a free altitude chamber

Posted: 5/24/2017 10:11:13 PM EDT

[#5]

oops

Posted: 5/24/2017 10:11:26 PM EDT

[#6]

Because you'll both die if you do it the other way. If you live you can help others after.

Posted: 5/24/2017 10:12:38 PM EDT

[#7]

Posted: 5/24/2017 10:13:53 PM EDT

[#8]

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Quoted:
Because you'll both die if you do it the other way. If you live you can help others after.

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Unless you have cardiac/pulmonary ailments you aren't dying.

People are exposed to high altitudes for ~~fun~~ training on a regular basis.

altitude chamber hypoxia training guy passes out

https://www.youtube.com/watch?v=hSrGfElyfVE

Posted: 5/24/2017 10:34:54 PM EDT

[#9]

I'm sorta curious as to what happens to your ears, in a sudden de-pressurization.

Going from a cabin alt of ~10,000 ft to ~33,000 ft in a few seconds has gotta be pretty painful, no?

Posted: 5/24/2017 10:37:51 PM EDT

[#10]

Eh, they'll be down to 20000 feet in no time.

You can breathe that.

Posted: 5/24/2017 10:43:48 PM EDT

[#11]

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Quoted:
I'm sorta curious as to what happens to your ears, in a sudden de-pressurization.

Going from a cabin alt of ~10,000 ft to ~33,000 ft in a few seconds has gotta be pretty painful, no?

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It would get your attention. It's maybe 11 psi at 10,000 feet and 4 psi at 33,000 feet. So about 2/3 of an atm or roughly ascending from 20 feet of water to the surface. The good news is that unless you get a reverse block (trapped air shrinking in volume. Known as a "squeeze") in your sinuses from a cold or something you would probably be fine. Ears might pop. The reverse would hurt more.

Posted: 5/24/2017 10:46:36 PM EDT

[#12]

Posted: 5/24/2017 10:49:54 PM EDT

[#13]

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Quoted:
Eh, they'll be down to 20000 feet in no time.

You can breathe that.

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Once again the ones with only PC Flight Sim time make themselves known to GD.

Posted: 5/24/2017 10:52:12 PM EDT

[#14]

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Quoted:
Eh, they'll be down to 20000 feet in no time.

You can breathe that.

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Assuming your pilot has put on his/her mask...

Kalitta 66

Posted: 5/24/2017 10:52:21 PM EDT

[#15]

Quote History

Quoted:

And once an emergency decent is initiated, you'll be back in "breathable" air in a couple of minutes anyway

If I'm ever on an airplane that depressurizes (in the back/not flying) I fully intend to forego the mask and treat it like a free altitude chamber

View Quote

I'm pretty sure in that situation I'd be doing a lot more crapping my pants than breathing

Posted: 5/24/2017 10:54:49 PM EDT

[#16]

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Quoted:

Once again the ones with only PC Flight Sim time make themselves known to GD.

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people climb higher mountains than that without oxygen.

Posted: 5/24/2017 10:57:06 PM EDT

[#17]

Quote History

Quoted:
And once an emergency decent is initiated, you'll be back in "breathable" air in a couple of minutes anyway

If I'm ever on an airplane that depressurizes (in the back/not flying) I fully intend to forego the mask and treat it like a free altitude chamber

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Quoted:

Quoted:
You have less than a minute of consciousness at cruising altitude oxygen levels.

So, you know, go first.

And once an emergency decent is initiated, you'll be back in "breathable" air in a couple of minutes anyway

If I'm ever on an airplane that depressurizes (in the back/not flying) I fully intend to forego the mask and treat it like a free altitude chamber

That doesn't seem to be the case for golfer Payne Stewart.

Posted: 5/24/2017 10:59:07 PM EDT

[#18]

Posted: 5/24/2017 11:00:37 PM EDT

[#19]

https://en.m.wikipedia.org/wiki/1999_South_Dakota_Learjet_crash

Research has shown that a period of as little as 8 seconds without supplemental oxygen following rapid depressurization to about 30,000 feet (9,100 m) may cause a drop in oxygen saturation that can significantly impair cognitive functioning and increase the amount of time required to complete complex tasks.

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Posted: 5/24/2017 11:00:56 PM EDT

[#20]

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That doesn't seem to be the case for golfer Payne Stewart.

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No warning and autopilot.

Posted: 5/24/2017 11:05:24 PM EDT

[#21]

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Quoted:
That doesn't seem to be the case for golfer Payne Stewart.

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Quoted:

Quoted:
You have less than a minute of consciousness at cruising altitude oxygen levels.

So, you know, go first.

And once an emergency decent is initiated, you'll be back in "breathable" air in a couple of minutes anyway

If I'm ever on an airplane that depressurizes (in the back/not flying) I fully intend to forego the mask and treat it like a free altitude chamber

That doesn't seem to be the case for golfer Payne Stewart.

Right in the middle of my corporate days of flying on private jets, playing golf and having so much fun.

Posted: 5/24/2017 11:05:55 PM EDT

[#22]

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Quoted:

I'm pretty sure in that situation I'd be doing a lot more crapping my pants than breathing

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I thought the mask was needed to cover the smell of everyone crapping their pants...

Posted: 5/24/2017 11:08:01 PM EDT

[#23]

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Quoted:

That doesn't seem to be the case for golfer Payne Stewart.

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I don't think the pilots were able to descend. I'll have to look it up. Didn't the pilots not put on the mask or something

Posted: 5/24/2017 11:09:00 PM EDT

[#24]

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Quoted:

Right in the middle of my corporate days of flying on private jets, playing golf and having so much fun.

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Lucky bastard

Wish I could get jetted around and play golf

Posted: 5/24/2017 11:15:28 PM EDT

[#25]

I do not fear kicking it from a lack of oxygen but from an unplanned sudden stop.

Posted: 5/24/2017 11:16:34 PM EDT

[#26]

Posted: 5/24/2017 11:17:16 PM EDT

[#27]

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Quoted:
people climb higher mountains than that without oxygen.

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Yeah, they don't go from 8,000 feet to 30,000 in a few seconds. You can acclimate to high altitude with some time, but not in a few seconds.

Posted: 5/24/2017 11:17:57 PM EDT

[#28]

Quoted:
the other person is weaker.

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A source familiar with the situation told me that about 9 out of 10 people cannot explain the logic behind the directive.

Posted: 5/24/2017 11:22:48 PM EDT

[#29]

Reminds me that the old timers who climbed Everest without oxygen were hardy folks.

Posted: 5/24/2017 11:24:36 PM EDT

[#30]

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Lucky bastard

Wish I could get jetted around and play golf

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Quoted:

Quoted:

Right in the middle of my corporate days of flying on private jets, playing golf and having so much fun.

Lucky bastard

Wish I could get jetted around and play golf

There was more jetting than golfing. More poon and drinking. Good times.

Posted: 5/24/2017 11:26:34 PM EDT

[#31]

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Quoted:

A source familiar with the situation told me that about 9 out of 10 people cannot explain the logic behind the directive.

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Quoted:

Quoted:
the other person is weaker.

A source familiar with the situation told me that about 9 out of 10 people cannot explain the logic behind the directive.

90% are weaker than the 10%.

Posted: 5/24/2017 11:27:56 PM EDT

[#32]

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Quoted:
people climb higher mountains than that without oxygen.

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gradually.

most trails on big mountains are rated according to rate of ascent (for acclimatization) as well as technical difficulty

Posted: 5/24/2017 11:42:22 PM EDT

[#33]

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Quoted:

Assuming your pilot has put on his/her mask...

Kalitta 66

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That audio would be 90% of ARFCOM on normal coms.

Posted: 5/24/2017 11:47:56 PM EDT

[#34]

Why You Should Put YOUR MASK On First (My Brain Without Oxygen) - Smarter Every Day 157

https://www.youtube.com/watch?v=kUfF2MTnqAw

I thought it was interesting.

Posted: 5/24/2017 11:48:31 PM EDT

[#35]

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Quoted:
Eh, they'll be down to 20000 feet in no time.

You can breathe that.

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Ever tried? I'm going to guess no.

I've been in an airplane that lost cabin pressurization at 40k feet. You most likely will not make it to 20k feet (which is still o2 deficient, but usually thick enough to get engines re-lit).

Posted: 5/24/2017 11:54:04 PM EDT

[#36]

Quote History

Quoted:

Unless you have cardiac/pulmonary ailments you aren't dying.

People are exposed to high altitudes for ~~fun~~ training on a regular basis.

https://www.youtube.com/watch?v=hSrGfElyfVE

View Quote

I went through the chamber at Shaw AFB. We didn't have anyone pass out but we pulled our masks off at the simulated 25,000ft.

Nobody passed out

Posted: 5/24/2017 11:57:22 PM EDT

[#37]

Was on a night flight MSP to FL when, after about an hour, I noticed my ears felt a little funny. Then without warning, all the masks dropped down. Flight was otherwise normal, people kinda gave each other "WTF?" looks, and then it was announced we were losing cabin pressure and please put masks on. We then pretty much dropped from 30,000 to 10,000. Ears were definitely popping but wasn't painful. Landed in St Louis and had to wait for another plane. People weren't panicking, but there was plenty of tension and concern.

Posted: 5/24/2017 11:57:56 PM EDT

[#38]

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Quoted:
Eh, they'll be down to 20000 feet in no time.

You can breathe that.

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I have jumped at 18k with no O2

Posted: 5/24/2017 11:58:11 PM EDT

[#39]

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Quoted:

Ever tried? I'm going to guess no.

I've been in an airplane that lost cabin pressurization at 40k feet. You most likely will not make it to 20k feet (which is still o2 deficient, but usually thick enough to get engines re-lit).

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'make it' as in survive? Doesn't much matter if you are awake for the descent, unless you are the pilot.

Posted: 5/25/2017 12:01:14 AM EDT

[#40]

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http://i1.kym-cdn.com/photos/images/facebook/000/449/731/1c3.png

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well did he cum or what?

https://www.youtube.com/watch?v=2A_n_zwIZk4

Posted: 5/25/2017 12:04:12 AM EDT

[#41]

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Quoted:
I have jumped at 18k with no O2

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Doubt you needed it with that much adrenaline.

As far as other folks here, there's a time of useful consciousness based on time and altitude. You will pass out at some point. Hopefully he pilot isn't.

Posted: 5/25/2017 12:06:30 AM EDT

[#42]

Those shitty passenger masks don't do shit. Without pressurization you're not pushing oxygen into the hemoglobin anyways. So breath as much oxygen as you want, you're just gonna exhale it.

The pilots masks are pressurized.

Posted: 5/25/2017 12:10:58 AM EDT

[#43]

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Quoted:
There was more jetting than golfing. More poon and drinking. Good times.

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Quoted:

Quoted:

Right in the middle of my corporate days of flying on private jets, playing golf and having so much fun.

Lucky bastard

Wish I could get jetted around and play golf

There was more jetting than golfing. More poon and drinking. Good times.

Often how I pictured the life of a mod

Posted: 5/25/2017 12:18:25 AM EDT

[#44]

Quote History

Quoted:
Assuming your pilot has put on his/her mask...

Kalitta 66

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Quoted:

Quoted:
Eh, they'll be down to 20000 feet in no time.

You can breathe that.

Assuming your pilot has put on his/her mask...

Kalitta 66

At least the cockpit has O2 bottles, the Pax only have a couple minutes before they have no O2 - so if those masks fall you can bet you're descending very fast... and if you don't, you're going to blackout after a couple minutes - maybe crash and die while

sorry, I blacked out.

Posted: 5/25/2017 12:25:24 AM EDT

[#45]

Hey what happens if you're flying over mountains and can't descend?

Could this be a real scenario?

I'm obviously not a pilot.

Posted: 5/25/2017 12:27:06 AM EDT

[#46]

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Quoted:
Hey what happens if you're flying over mountains and can't descend?

Could this be a real scenario?

I'm obviously not a pilot.

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Go as low as you can. If IFR go to the lowest min safe altitude.

Posted: 5/25/2017 12:28:17 AM EDT

[#47]

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Quoted:
I don't think the pilots were able to descend. I'll have to look it up. Didn't the pilots not put on the mask or something

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Quoted:

Quoted:

That doesn't seem to be the case for golfer Payne Stewart.

I don't think the pilots were able to descend. I'll have to look it up. Didn't the pilots not put on the mask or something

https://en.wikipedia.org/wiki/1999_South_Dakota_Learjet_crash

Posted: 5/25/2017 12:34:42 AM EDT

[#48]

I realize it might be dumb question as I understand a vacuum but wouldn't a redundant oxygen supply nozzle pumping 20l a minute on the pilots headrest provide an extra few minutes to allow them to keep their bearings?

Talking about modern airlines with sealed cockpit doors, not general aviation.