Wikiposts
Search
Tech Log The very best in practical technical discussion on the web

Autoland

Thread Tools
 
Search this Thread
 
Old 26th Jan 2002, 21:15
  #1 (permalink)  
Thread Starter
 
Join Date: Nov 2001
Location: uk
Posts: 12
Likes: 0
Received 0 Likes on 0 Posts
Post Autoland

Just out of interest, what is the max allowable crosswind for an autoland to be carried out? I once heard 15 knots.
trapped off is offline  
Old 26th Jan 2002, 22:14
  #2 (permalink)  
 
Join Date: Jun 2000
Location: underground
Posts: 227
Likes: 0
Received 0 Likes on 0 Posts
Post

AIRBUS A320/321......

Head Wind : 30 kt

Tail Wind : 10 kt

CrossWind : 20 kt

Other types have different 'Demonstrated'limits.
moleslayer is offline  
Old 27th Jan 2002, 01:35
  #3 (permalink)  
 
Join Date: Mar 2001
Location: I wouldn't know.
Posts: 4,498
Likes: 0
Received 0 Likes on 0 Posts
Post

Boeing 737-300:

Autoland:

Headwind: 20 kts. .Crosswind: 15 kts. .Tailwind: 10 kts.

CAT II/III-Operation

Headwind: 20 kts. .Crosswind 10 kts. .Tailwind 10 kts
Denti is offline  
Old 27th Jan 2002, 02:25
  #4 (permalink)  
 
Join Date: Jul 2000
Location: West
Posts: 399
Likes: 0
Received 0 Likes on 0 Posts
Post

757/767: 25 kts X-W (although company limits this to 15 kts in CAT II & CAT III conditions)

All FAR Part 25 aircraft are limited to 10 kts max tailwind, and that is true for the aurtoland as well.

Max groundspeed 165 kts
None is offline  
Old 27th Jan 2002, 03:16
  #5 (permalink)  
 
Join Date: Jul 2000
Location: Gatwick
Posts: 220
Likes: 0
Received 0 Likes on 0 Posts
Post

757 with a UK operator (including Cat 2 and 3). .headwind - 25kts. .crosswind - 25kts. .tailwind - 15kts

[ 26 January 2002: Message edited by: wysiwyg ]</p>
wysiwyg is offline  
Old 27th Jan 2002, 13:40
  #6 (permalink)  
 
Join Date: Aug 2000
Location: London
Posts: 20
Likes: 0
Received 0 Likes on 0 Posts
Post

Avro RJ-100

Headwind - 25kt. .Tailwind - 10kt. .Crosswind - 15kt

On 3 engines, max headwind reduced to 15kt
redbug is offline  
Old 27th Jan 2002, 14:36
  #7 (permalink)  
Just another number
 
Join Date: Jun 2001
Location: UK
Age: 76
Posts: 1,077
Likes: 0
Received 0 Likes on 0 Posts
Lightbulb

BA 747-400

Headwind 25kts

Tailwind 15kts

Crosswind 25kts (10kts in US for Cat 2 and 3).
Captain Airclues is offline  
Old 29th Jan 2002, 09:08
  #8 (permalink)  
 
Join Date: Oct 2001
Location: Gatwick
Posts: 1,980
Likes: 0
Received 0 Likes on 0 Posts
Post

Got told on my training course a few years back that a L1011 got down with a 44kt cross wind in the Falklands.

The guy that told me was the Lockheed chief engineering trainer!
Litebulbs is offline  
Old 29th Jan 2002, 09:57
  #9 (permalink)  
 
Join Date: Sep 2001
Location: &quot;The Air Capital&quot;
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Post

Transport Canada won't even consider an AP unless it can do at least 25kt head, 15kt cross & 10kt tail. . .BTW watch out for "tower winds" from airfields in the US Mid-West equipped with Low Level Wind Shear sytems - they give out an average out of the LLWS sensors that can be almost an order of magnitude lower than the IRU shows on the approach. Their sensors are only at about 3m as opposed to the old ICAO 10m tower anemometer.
jbc2001 is offline  
Old 1st Feb 2002, 22:08
  #10 (permalink)  
 
Join Date: Apr 1999
Posts: 18
Likes: 0
Received 0 Likes on 0 Posts
Post

Intereting how we all use different limits for the same thing!

757-200 and 767-300 (UK Charter Operator). .Headwind 25. .Tailwind 15 (767 - 10 kt ac limit). .X Wind 25 kts. .If RVR &lt;150m then 10 kts max x-wind.

I read in the ac manual that the ac (757) was demonstrated to:. .Headwind 34. .Tailwind 25. .X Wind 25

Regards
av8er is offline  
Old 2nd Feb 2002, 03:24
  #11 (permalink)  
 
Join Date: Nov 2000
Location: sunny country
Posts: 101
Likes: 0
Received 0 Likes on 0 Posts
Post

MD11:. .Headwind 25kt. .Crosswind 15kt. .Tailwind 10kt
Bokomoko is offline  
Old 4th Feb 2002, 07:49
  #12 (permalink)  
 
Join Date: Mar 2000
Location: Arizona USA
Posts: 8,571
Likes: 0
Received 0 Likes on 0 Posts
Post

Have used autoland in the TriStar at 35 knots crosswind (aircraft PC)...worked like a charm.. .Ah Lockheed.....
411A is offline  
Old 6th Feb 2002, 01:08
  #13 (permalink)  
 
Join Date: Mar 2001
Location: London,,Great Britain
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Talking

B777

15Kts Tail. .40Kts Cross (25Kts in cat II/III) and that's on one engine as well and it works, too!

[ 05 February 2002: Message edited by: Full_Wings ]</p>
Full_Wings is offline  
Old 6th Feb 2002, 23:03
  #14 (permalink)  
 
Join Date: Jan 2001
Location: Dirty Sands
Age: 62
Posts: 125
Likes: 0
Received 0 Likes on 0 Posts
Arrow

Md-80 series:

25 KT headwind component. .15 KT Xwind ". .10 KT Tailwind "

Our line further limits Xwind component to 10 KT for CAT II/III ops.
TE RANGI is offline  
Old 7th Feb 2002, 01:54
  #15 (permalink)  
 
Join Date: Sep 1998
Location: wherever
Age: 55
Posts: 1,616
Likes: 0
Received 0 Likes on 0 Posts
Post

Litebulbs. .I can neither confirm nor deny your post!!!. .Now would anyone care to talk about aileron saturation?
FE Hoppy 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.