FAR 91.117c Speed Under B

digitalpilot

Newcomer
Feb 7, 2016
9
0
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Okay that sounds quite reasonable!

Another way to look at it is that it takes about 15 sec to slow 10 Kts on average at all altitudes!
 

FM_Weasel

Senior Analyst
Dec 9, 2008
991
7
18
I need you to slow yesterday because I'm already way too late in issuing the speed restriction.
 

digitalpilot

Newcomer
Feb 7, 2016
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1
How about Descent Clearances.... I know the ICAO states say that the descent must started within 2 mins.... However, my experience that it needs to be done within one minute or less before ATC gives us a second reminder!

Is it fair to say One min or less is the standard convention?
 

StuSEL

Moderator
Aug 23, 2009
1,014
10
38
You know where.
How about Descent Clearances.... I know the ICAO states say that the descent must started within 2 mins.... However, my experience that it needs to be done within one minute or less before ATC gives us a second reminder!

Is it fair to say One min or less is the standard convention?
Try 15 seconds or less. Not a hard and fast rule, but anything beyond that is a little weird unless you're having some sort of problem.
 

digitalpilot

Newcomer
Feb 7, 2016
9
0
1
Guys another question regards to Rates of Descent...

Flying into the busy airspace in and around JKF, EWR, BOS, ORD and LAX... what Rate of Descent would ATC like from us Heavies?
 

mbalunda

Epic Member
Jan 31, 2009
2,867
15
38
Guys another question regards to Rates of Descent...

Flying into the busy airspace in and around JKF, EWR, BOS, ORD and LAX... what Rate of Descent would ATC like from us Heavies?
500 feet per minute is considered the standard for the climb or descent. If you can't maintain that you're supposed to advise ATC.
 

digitalpilot

Newcomer
Feb 7, 2016
9
0
1
Yes off course 500FPM is min... but just wondering if ATC has a preference...

For example here in China ATC wants min... 2500FPM for Climb and Descent due to the congested and limited airspace they have to work with!

Most airspace in China is Military controlled and so for Civilian Transport there are only small corridors in which ATC has any play... therefore 2500FPM ATC requirement in China!

Just wondering for US!