Fl470
07-20-2020, 10:49 AM
#1
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Thread Starter
Joined APC: Jan 2015
Posts: 431
Fl470
Doing some boredom-induced spying on flightaware...
XOJet nearly always has their Citation X at FL470.. but Mountain Aviation (“foothills”) rarely sends them up there... any known reason??
also, any X drivers who’ve achieved FL510?
XOJet nearly always has their Citation X at FL470.. but Mountain Aviation (“foothills”) rarely sends them up there... any known reason??
also, any X drivers who’ve achieved FL510?
Last edited by Mr Rumbold; 07-20-2020 at 11:04 AM.
07-20-2020, 07:07 PM
#2
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Joined APC: Jan 2014
Posts: 96
Originally Posted by Mr Rumbold
Doing some boredom-induced spying on flightaware...
XOJet nearly always has their Citation X at FL470.. but Mountain Aviation (“foothills”) rarely sends them up there... any known reason??
also, any X drivers who’ve achieved FL510?
XOJet nearly always has their Citation X at FL470.. but Mountain Aviation (“foothills”) rarely sends them up there... any known reason??
also, any X drivers who’ve achieved FL510?
07-22-2020, 07:25 AM
#3
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Joined APC: Jul 2013
Posts: 459
Originally Posted by 1wife2airlines
One doesn't want to pay for the O2 that one pilot has to suck and the other does pay or tells their pilots not to suck it. More current people might explain the requirements for flight above 410, 450 whatever.
However, I think whether you burn oxygen or more fuel makes it a moot point on the cost. Also, due to COVID some airlines including Delta received relief from the reg up to FL410. I wouldn’t be surprised if the reg changed at some point in the future due to better pressure warning systems, fewer problems with structural failure, and better quick-donning masks.
07-22-2020, 08:42 AM
#4
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Joined APC: May 2010
Position: Baja Vermont
Posts: 5,171
Originally Posted by EMAW
the reg is above fl350 for 135 operators, FL410 for Part 91. At least 1 pilot at the controls must wear secured and sealed an oxygen mask required by this part.
However, I think whether you burn oxygen or more fuel makes it a moot point on the cost. Also, due to COVID some airlines including Delta received relief from the reg up to FL410. I wouldn’t be surprised if the reg changed at some point in the future due to better pressure warning systems, fewer problems with structural failure, and better quick-donning masks.
However, I think whether you burn oxygen or more fuel makes it a moot point on the cost. Also, due to COVID some airlines including Delta received relief from the reg up to FL410. I wouldn’t be surprised if the reg changed at some point in the future due to better pressure warning systems, fewer problems with structural failure, and better quick-donning masks.
07-22-2020, 02:47 PM
#5
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Joined APC: Jul 2013
Posts: 459
Originally Posted by galaxy flyer
The NBAA has had a committee working to change 91.211 for years (.I was on it for a couple of years) and the FAA, specifically the CAMI, is unalterably opposed you any relief save an operator-specific exemption with some hard mitigations on equipage and crew training. A few operators may have obtained an exemption, but it’s an detailed application process, far more than a routine LOA. We provided all kinds of data, but no interest in change. Depressurization above F350 is about a 10E-9 event.
07-30-2020, 02:45 AM
#6
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Joined APC: Feb 2008
Posts: 19,258
Originally Posted by EMAW
Understand, but the 121 world got their deviation in less than a month. I understand why the reg is what it is, but for an aircraft that likes to be FL360 to FL430 it’s ridiculous and not very healthy to wear a mask for 3+ hrs of a flight with both pilots at the controls. I can understand if one gets up.
07-30-2020, 05:43 AM
#7
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Joined APC: May 2010
Position: Baja Vermont
Posts: 5,171
Originally Posted by EMAW
Understand, but the 121 world got their deviation in less than a month. I understand why the reg is what it is, but for an aircraft that likes to be FL360 to FL430 it’s ridiculous and not very healthy to wear a mask for 3+ hrs of a flight with both pilots at the controls. I can understand if one gets up.
