2006-08-17 08:20:36 · 18 answers · asked by Anonymous in Cars & Transportation ➔ Aircraft
When in flight, on a commercial airplane, the cabin is pressurized to ~8,000 ft. If the cabin altitude reaches or exceeds 14,000 ft. the oxygen masks drop.
As many have mentioned, 10,000 ft. is the ceiling without supplemental oxygen or a pressurized cabin.
2006-08-17 18:39:09 · answer #1 · answered by d_robertson744 2 · 1⤊ 0⤋
Legally it is 10,000 feet above sea level without oxygen.
You can legally go over 10,000 without oxygen for no more than 30 minutes and then only once during a flight.
A lot of small planes cannot get up there due to the thinning air so it really does not present a big problem.
2006-08-17 10:20:55 · answer #2 · answered by beedaduck 3 · 1⤊ 0⤋
If you ascend slowly enough you may be able to make it to 15,000 feet without oxygen, but it's not recommended. It's not just the air that's the problem -- it's the temperature. At 15,000 feet the temperature is cold enough to cause frostbite on exposed skin. Barnstormers and other pilots who fly without oxygen generally don't fly above 5,000 feet because of the thin air and the temperature problem.
2006-08-17 08:28:49 · answer #3 · answered by sarge927 7 · 2⤊ 0⤋
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2016-12-16 16:05:18 · answer #4 · answered by Anonymous · 0⤊ 0⤋
The FAA allows 10,000 ft without being pressurized or using an oxygen mask. You can go higher, but it not safe and hypoxia could set in.
I used to fly and this was the rule. I do not know if it has changed.
2006-08-17 09:22:45 · answer #5 · answered by ? 5 · 1⤊ 0⤋
I assume you mean in un-pressurized airplanes, in which case:
If a pilot flies between 12,501 ft. and 14,000 ft. for longer than 30 minutes(cumulative), he/she must use supplemental oxygen. If a pilot flies above 14,000 ft. for any amount of time, supplemental oxygen must be in use. Above 15,000 ft., each occupant in the plane must be provided with supplemental oxygen, though only the required flight crew must use it.
Basically, the answer to your question is 14,000 ft., or 12,501 ft. after 30 minutes.
2006-08-17 09:57:24 · answer #6 · answered by redbeard172 2 · 1⤊ 0⤋
At 15,000ft you would die in a few minutes.
The cold and the lack of oxygen are equally deadly, but different for different people. A skinny guy like me would pass out or freeze to death well before fat bastard.
2006-08-17 08:58:50 · answer #7 · answered by Doggzilla 6 · 0⤊ 0⤋
Passengers cannot breathe normally ikn an airplane without stored oxygen once above 12,000 feet.
This is why airliners have pressurized cabins.
2006-08-17 15:22:10 · answer #8 · answered by nerris121 4 · 0⤊ 0⤋
To the Armstrong line, 12-13,000 ft.
2006-08-17 08:52:25 · answer #9 · answered by Anonymous · 0⤊ 0⤋
redbeard172 is the only one who has a clue here. The rest of the answers that have been given are flat out wrong.....and some are just plain stupid.
2006-08-18 18:14:33 · answer #10 · answered by onion 2 · 1⤊ 0⤋