Boeing777311 From United States of America, joined Mar 2001, 126 posts, RR: 0 Posted (10 years 2 months 3 weeks 5 days 19 hours ago) and read 3054 times:
What is the max cruising altitude of a plane with out a pressureizd cabin?
Also what are some aircrafts (civil and military) max altitudes?
Timz From United States of America, joined Sep 1999, 6465 posts, RR: 8 Reply 1, posted (10 years 2 months 3 weeks 5 days 17 hours ago) and read 3027 times:
If you mean, max altitude to carry paying passengers, must be 10000 ft? Or maybe less?
Or is that just a US rule? Maybe they waive it at La Paz anyway.
Hmmmm... From Canada, joined May 1999, 2088 posts, RR: 5 Reply 2, posted (10 years 2 months 3 weeks 5 days 17 hours ago) and read 3022 times:
Canadian air regulations stipulate that, in Canada, no person shall fly an unpressurized aircraft between 10,000 and 13,000 ft. ASL for more than 30 minutes unless there is, available to each person, an oxygen mask and a supply of oxygen, nor shall anyone fly an unpressurized aircraft, for any amount of time over 13,000 ft., unless there is an oxygen mask and a supply of oxygen available for each person.
Those are the legal limits, but that also gives you a good idea of what the practical limits are.
An optimist robs himself of the joy of being pleasantly surprised
Timz From United States of America, joined Sep 1999, 6465 posts, RR: 8 Reply 3, posted (10 years 2 months 3 weeks 5 days 17 hours ago) and read 2998 times:
Does anybody know an airline that uses oxygen masks routinely?
Catpac From Australia, joined Mar 2001, 236 posts, RR: 0 Reply 5, posted (10 years 2 months 3 weeks 5 days 9 hours ago) and read 2942 times:
A large jet (A340, B747) around 35,000ft-40,000
Smaller jets (B737, A320) prefer around 30,000ft-35,000ft
executive jets (Citation, Learjet) prefer above 40,000ft
Concorde loves altitudes of about 55,000ft
Blackbird often reaches up to 80,000ft and a speed of Mach 3.0
these altitudes are averages, but at the end of the day it depends oh how long the route is and the weight of the aircraft, etc...but this should give you a rough idea of who flies where.
MxCtrlr From United States of America, joined Nov 2001, 2485 posts, RR: 40 Reply 7, posted (10 years 2 months 3 weeks 5 days 8 hours ago) and read 2914 times:
According to the B-727 MEL (Minimum Equipment List, for those who don't know), an operate may operate a B-727 unpressurized but must limit altitude to 10,000 feet.
MxCtrlr
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Kay From France, joined Mar 2002, 1884 posts, RR: 3 Reply 8, posted (10 years 2 months 3 weeks 5 days 4 hours ago) and read 2853 times:
Scientifically, 12,500ft is the max altitude after which oxygen lacks. More than 30 minutes up there and one suffers hypoxia and other lack-of-oxygen related symptoms.
Very dangerous. You can become unconscious.
"Hmmmmm", 10,000ft is the legal limit in Canada, but not the practical limit! I spend quite some time around that altitude with a max of 10,500ft in the 172.
Radarbeam From Canada, joined Mar 2002, 1310 posts, RR: 5 Reply 10, posted (10 years 2 months 3 weeks 5 days 3 hours ago) and read 2826 times:
The truth is that hypoxia can start at different levels depending on the person and other factors, such as the time of the day. For example during day time one could become hypoxic at 7,000ft or 8,000ft if the person is in bad physical condition or if the person is a smoker. And during night time assuming the person is in good health condition (non-smoker) hypoxia could start as low as 5,000ft.
Galaxy5 From United States of America, joined Mar 2000, 2034 posts, RR: 27 Reply 11, posted (10 years 2 months 3 weeks 5 days 2 hours ago) and read 2806 times:
in the US ( military to be specific ) the max alt without supplemental oxygen requirements is 10,000 feet.
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Hmmmm... From Canada, joined May 1999, 2088 posts, RR: 5 Reply 13, posted (10 years 2 months 3 weeks 5 days 2 hours ago) and read 2786 times:
Hmmmmm", 10,000ft is the legal limit in Canada, but not the practical limit! I spend quite some time around that altitude with a max of 10,500ft in the 172.M
You are incorrect, the legal limit in Canada is not 10,000 ft. You did not bother to read my post. Nor have you bothered to read the Canadian Aviation Regulations before posting about this issue.
The legal limit is 13,000 ft. for 0 minutes without oxygen as described. Then it is anywhere between 10,000 to 13,000 ft. for a max of 30 minutes without oxygen as described. Reference CAR 605.31
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