Wikiposts
Search
ATC Issues A place where pilots may enter the 'lions den' that is Air Traffic Control in complete safety and find out the answers to all those obscure topics which you always wanted to know the answer to but were afraid to ask.

Min climb rate

Thread Tools
 
Search this Thread
 
Old 25th Jul 2001, 20:55
  #1 (permalink)  
Thread Starter
 
Join Date: Dec 1999
Location: honkers
Posts: 144
Likes: 0
Received 0 Likes on 0 Posts
Post Min climb rate

Could someone please tell me what the minimum climb rate is.
I am wondering as I fly a turbo prop and on a hot day at approx 16000 ft and above we struggle to get 500 fpm climb rate out of it(sometimes we only get 300 fpm).
Your help is welcomed.

SC...........
SkyCruiser is offline  
Old 25th Jul 2001, 21:02
  #2 (permalink)  
 
Join Date: Mar 2000
Location: Winchester.Hants.England
Posts: 406
Likes: 0
Received 0 Likes on 0 Posts
Post

Try losing some weight, cut down your beer/food intake.
Hope that helps

Cheers
FBW
PS Hope you are keeping well and enjoying things.

[ 25 July 2001: Message edited by: Flybywyre ]
Flybywyre is offline  
Old 25th Jul 2001, 22:06
  #3 (permalink)  
 
Join Date: Jul 2001
Location: Fort Worth ARTCC ZFW
Posts: 1,155
Likes: 0
Received 0 Likes on 0 Posts
Cool

SkyCruiser;

Can't speak for the folks in Europe, but in the US our written policy for normal rate of climb is 500 fpm and you are requested to advise ATC if you can't keep up with that.

regards
Scott Voigt is offline  
Old 25th Jul 2001, 23:33
  #4 (permalink)  
 
Join Date: Jun 2001
Location: United Kingdom
Posts: 27
Likes: 0
Received 0 Likes on 0 Posts
Post

SkyCruiser, the UK AIP states that all aircraft are to maintain a minimum climb rate of 500fpm. If the pilot is unable to comply with this, he should let ATC know beforehand. I guess this means you tell the tower when you get start clearance. To be perfectly honest, it doesn`t make a terrific amount of difference to us ATCOs. We all like a good laugh in fact, oh will we ever have such amusement as when the Caledonian (RIP) ten-elevens used to climb out at 240fpm but `We can wind it up to 360fpm if you want, Sir`! Did they sit at Gatwick doing their checks to see if they would be able to clear the Alps??!! All the same, we all loved `em and we all miss `em. Cheers, BB.
Bewli-Begto is offline  
Old 26th Jul 2001, 00:31
  #5 (permalink)  
 
Join Date: Apr 2001
Location: Near Stalyvegas
Age: 78
Posts: 2,022
Likes: 0
Received 0 Likes on 0 Posts
Talking

I remember at PATCRU, [I SAID I was a BOF!!!]
A Cambrian Ba11 off EGGP climbing at 500+fpm, and a BEA Ba11 off EGCC at 500- fpm. Same route, same flight level. As BAW lobbed off first, [by 1 min,longer route] they got the priority!
we aim to please, it keeps the cleaners happy
chiglet is offline  
Old 26th Jul 2001, 12:52
  #6 (permalink)  
 
Join Date: Apr 2001
Location: UK TC
Posts: 8
Likes: 0
Received 0 Likes on 0 Posts
Exclamation

On a parallel heading!!

I heard at work yesterday, that them-up-town are about to remove the 500fpm minimum climb/descent rate from the AIP.

Me thinks this is a bad move. Floating down like a leaf is not helpful, particularly in the stacks.

What say you all?
Kirk to Enterprise is offline  
Old 26th Jul 2001, 16:45
  #7 (permalink)  
 
Join Date: Jul 2000
Location: My views - Not my employer!
Posts: 1,032
Likes: 0
Received 0 Likes on 0 Posts
Post

Me thinks this is a bad move. Floating down like a leaf is not helpful, particularly in the stacks.
Think the last edition of CHIRP had something to say about that.....

On the question of descent rates, when told to expedite descent, how much do you expect?
Cough is offline  
Old 26th Jul 2001, 19:48
  #8 (permalink)  
Pardoned PPRuNer
 
Join Date: Jun 2001
Location: GlassGumtree
Posts: 387
Likes: 0
Received 0 Likes on 0 Posts
Post

I would not personally use "Expedite Descent", I could only forsee 3 scenarios when it comes to level clearances.

1)'When Ready .....' with a possible requirement to be level somewhere...
2)'Descend XXX with XXXXFPM* minimum (*Insert XXXMPM when Metric)
3)'Traffic 12 o'clock 6 miles descend immediately* (*with additional - Like your life depends on it...because it does)

I see no need to say expedite descent as it far from being a POSITIVE control action and does NOT ENSURE SEPARATION.

Of course that would not preclude the use of Expedite Descent for controller amusement.

I await to be corrected by my learned freinds.
TrafficTraffic is offline  
Old 27th Jul 2001, 15:58
  #9 (permalink)  
 
Join Date: Jun 2000
Location: far far away
Posts: 99
Likes: 0
Received 0 Likes on 0 Posts
Thumbs up

I think the word EXPEDITE quite clearly conveys the required message.

Why go to the trouble of imposing a specific climb/descent rate, unless you're doing a fancy climb under/descent on top?

"Descend immediately" - "ok" thinks pilot, "down I go immediately - at 500fpm"

"Increase your rate of descent" - from 500fpm to 510fpm????

"Expedite your descent through FLxxx" - "I require you to pass the level stated as soon as you possibly can!"

Obviously NOT TO ENSURE SEPARATION. But to get over/under another sector maybe - or in order to release on own navigation sooner? There are plenty of reasons.

Oh, and it's also STANDARD PHRASEOLOGY.

I personally would and do use it. What you do is up to you.

[ 27 July 2001: Message edited by: Goldfish Watcher ]
Goldfish Watcher is offline  
Old 27th Jul 2001, 16:32
  #10 (permalink)  
Odi
 
Join Date: Jan 2001
Location: Ice Station Zebra
Age: 57
Posts: 91
Likes: 0
Received 0 Likes on 0 Posts
Talking

I was once told that the pilot's rate of descent is in direct proportion to the pitch of the controller's voice:

The higher the pitch the quicker the descent!
Odi is offline  
Old 28th Jul 2001, 00:15
  #11 (permalink)  
Pardoned PPRuNer
 
Join Date: Jun 2001
Location: GlassGumtree
Posts: 387
Likes: 0
Received 0 Likes on 0 Posts
Angel

Goldfish Watcher,

It is the first time I have ever seen somebody call the use of xxxxfpm as fancy, far from it, it is a very handy tool of the trade and allows you to CONTROL the traffic as in ATC. You use EXPEDITE DESCENT to your hearts content, simply saying it is standard phraseology makes for a good defence here, but the mere fact that somebody asked what exactly it meant , or what we thought it meant reveals the true inadequacies of it. You want someone to be clear of something, give them a requirement in advance so they can plan the descent in the FMS. If you cant due traffic then tell them to expect a late descent with a high rate, or even better call the pesky high sector with no traffic and tell them this one is gonna be high, the use of ExpDes to help you meet your LOA's does seem to be a bit of overkill and wit lose its importance with crews, evry heard about the Boy Crying Wolf.


Of course we are a Team of Indivduals and Im pretty sure it says somewhere in 4444 that nothing shall preclude a controller from using judgement as necessary.......


p.s. I wouldnt take over from someone using EXPEDITE DESCENT until the RA was finished!!!
TrafficTraffic is offline  
Old 28th Jul 2001, 08:21
  #12 (permalink)  
 
Join Date: Jul 2001
Location: Fort Worth ARTCC ZFW
Posts: 1,155
Likes: 0
Received 0 Likes on 0 Posts
Cool

Actually over here we have expedite spelled out for the pilots (should have pictures though since they don't seem to get the flick <G> ). When they float down though when I tell them to expedite and it isn't working anymore then the vector comes into effect <G>. They then ask what do you need. I tell them I needed your best and I see that it wasn't good enough, don't worry about it though, we will take care of it for you.... <EG>

I have and do use the FPM stuff when I need to ensure separation though, as well as crossing restrictions. The other stuff is when you are trying to get everyone down for the sequence. Yes, I know, you use the stacks, we have a quaint method of putting them in line and handing them off to approach though <BG>..

regards
Scott Voigt is offline  
Old 28th Jul 2001, 08:50
  #13 (permalink)  
 
Join Date: Jul 2001
Location: Curitiba-Brazil
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
Cool

Hi guys,

Here in South America we commonly use climb gradient in %, this will reflet directly in the VSI.... well, keeping it straight:
It is as normal to use a 3,3 % climb gradient as standard , it happens to find different ones as they may and alway vary according to terrain conditions alongside. That's what determines the required climb gradient for each airport.
La paz (Bolivia SLLP), Lima (SPIM), Bogotá DC (SKBO) and some others require a much higher climb gradient up to 5% or more !!
This will of course filter the number of allowable aircrafts to land those airport :-)and to tkoff due to high terrain and atmos. conditions. The airplanes will need more rwy for tkoff.
If I´m not wrong, following ICAO's climb minima, the second segment asks for 2,4% and 1,2% for the third for twin eng.
In the other hand, if impossible to comply, advise ATC, wait for another day, much colder,high pressure and more head wind, pick up your bag and sunglasses,seal the doors and go to the bar:-)

Well, to be straight :-)

Hope this help.
Claudio Antonio C. is offline  
Old 28th Jul 2001, 08:56
  #14 (permalink)  
 
Join Date: Jul 2001
Location: Curitiba-Brazil
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
Red face

Ops !

the gradients just told are minimums for the event of and one engine failure and are for the second and FOURTH segment:
2 eng 3eng 4eng
1st 2,4% 2,7% 3,0%
4th 1,2% 1,5% 1,7%

Cheers!
Claudio Antonio C. is offline  
Old 28th Jul 2001, 18:19
  #15 (permalink)  
 
Join Date: Jun 2000
Location: far far away
Posts: 99
Likes: 0
Received 0 Likes on 0 Posts
Smile

TT
Thank you for for words of extreme wisdom.
I have heard of the boy who cried "wolf". If you are suggesting I over use "expedite" then either you've been listening in on my freqs or you're making a very large assumption from my post.

OK Hands up - fancy was probably the wrong word to use. I do think specific climb/descent rates work in the example I mentioned. Its not a technique I see used often as it still requires as much monitoring as a stepped climb/descent.

Any way - Only putting forward my point of view - no need to jump up and down about it.
Goldfish Watcher is offline  
Old 28th Jul 2001, 18:42
  #16 (permalink)  
 
Join Date: Oct 2000
Location: Berkshire, UK
Age: 79
Posts: 8,268
Likes: 0
Received 0 Likes on 0 Posts
Post

Two items come to mind:

1. The US ATCO who said "Climb like your life depends on it - becuase it does".
2. And the legendary Heathrow ATCO who used to ask "What's your max rate of descent".. then add 500fpm to the reply and demand that. And he always got grateful thanks from the crews...!!
HEATHROW DIRECTOR is offline  
Old 28th Jul 2001, 19:07
  #17 (permalink)  
 
Join Date: Jul 2001
Location: Ottawa, Canada
Age: 70
Posts: 213
Likes: 0
Received 0 Likes on 0 Posts
Post

That legendary EGLL ATCO wouldn't be the same one that kept yelling "more jets, more jets" would it?

Rumour had it that I would find you lurking on this coference, long time no speak!!!
ex-EGLL is offline  
Old 29th Jul 2001, 02:39
  #18 (permalink)  
 
Join Date: Jul 2000
Location: My views - Not my employer!
Posts: 1,032
Likes: 0
Received 0 Likes on 0 Posts
Post

Guess that answers my question. We need video links to you guys on the ground, with smell-o-vision. If you ask for a descent with a white face and 'smell'. I go down, quick, no questions asked!
Cough is offline  
Old 30th Jul 2001, 00:50
  #19 (permalink)  
 
Join Date: Feb 2001
Location: Hants, UK
Posts: 1,064
Likes: 0
Received 0 Likes on 0 Posts
Post

Expedite is all very well, but can mean different things to different people. The Tristar example has already been given, but an A340 in the climb en route HK also springs to mind. So "Expedite" in itself does not ensure separation. I prefer to find out what rate of climb the a/c is able to give me through the relevant level and then specify that or not less than whatever I need. Then at least you are actually CONTROLLING the situation rather than relying upon some pilot (or computer) interpretation of "Expedite".
eyeinthesky is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.