JulianUK
Topic Author
Posts: 105
Joined: Sat Apr 29, 2006 6:00 am

Autoland In Crosswinds Situations Question

Thu May 04, 2006 10:18 pm

How good is modern autoland in crosswinds? Will it do wing down into the wind itself or does it need some assistance from the person up front? Is there any constraint on crosswind landings with autoland in use? for example if it is a gusty crosswind with sudden changes in wind speed can it react well? just interested in different aircraft types and their characeteristics.

J
 
CosmicCruiser
Posts: 2049
Joined: Tue Feb 22, 2005 3:01 am

RE: Autoland In Crosswinds Situations Question

Thu May 04, 2006 11:25 pm

MD-11 autoland x-wind limits...15kts; for CATII/III...10kts.

It does a very good job on it's own.
 
User avatar
longhauler
Posts: 4948
Joined: Sat Mar 06, 2004 12:00 am

RE: Autoland In Crosswinds Situations Question

Fri May 05, 2006 1:17 am

A320/A321/A319 crosswind limits are 15Kts for all autolands including CatII and CATIII Dual, (no DH).

It does a crosswind landing just like you or me. One wing down, maintain lateral orientation with rudder.

Very recently we are now authorized to do single engine CatIII, with up to a 15kt crosswind. The only restriction is on the amount of reverse thrust you use ... it varies with the crosswind.
Just because I stopped arguing, doesn't mean I think you are right. It just means I gave up!
 
411A
Posts: 1788
Joined: Mon Nov 12, 2001 10:34 am

RE: Autoland In Crosswinds Situations Question

Tue May 16, 2006 11:33 am

L1011.

Crosswind restriction during automatic approach/landings (autolands) is 35 knots, on dry runways.
25 knots if wet.
15 knots if CATIII.
 
2H4
Posts: 7960
Joined: Tue Oct 19, 2004 11:11 pm

RE: Autoland In Crosswinds Situations Question

Tue May 16, 2006 11:37 am




Quoting 411A (Reply 3):
Crosswind restriction during automatic approach/landings (autolands) is 35 knots, on dry runways.

Wow.




2H4


Intentionally Left Blank
 
highflyer9790
Posts: 1189
Joined: Thu Jul 07, 2005 1:21 am

RE: Autoland In Crosswinds Situations Question

Tue May 16, 2006 11:42 am

Quoting LongHauler (Reply 2):
The only restriction is on the amount of reverse thrust you use

doesnt auto throttle automatically deploy the reversers? how much, if anything, is done by the pilots in an autoland besides monitoring, assuming they do not disconnect the auto pilot at DH in a CAT I or II?
121
 
EssentialPowr
Posts: 1646
Joined: Wed Sep 06, 2000 10:30 pm

RE: Autoland In Crosswinds Situations Question

Tue May 16, 2006 12:39 pm

On the 737s (NGs and classics), A/Ts disconnect 2 sec after touchdown, so reverse thrust is manual.
 
CX Flyboy
Posts: 6026
Joined: Sun Dec 26, 1999 6:10 pm

RE: Autoland In Crosswinds Situations Question

Tue May 16, 2006 3:26 pm

In the 777-200 and 777-300, autoland crosswind limits are the same as manual landings, so 38kts crosswind on a dry runway, 20kts for slush/water/snow, and 15kts for ice and compact snow.

The exception is a 25kt autoland crosswind limit for LWMO landings.

Autoland is great for single engined landings too.
 
wing
Posts: 1357
Joined: Sun Oct 01, 2000 9:10 pm

RE: Autoland In Crosswinds Situations Question

Tue May 16, 2006 7:25 pm

Quoting HighFlyer9790 (Reply 5):
doesnt auto throttle automatically deploy the reversers? how much, if anything, is done by the pilots in an autoland besides monitoring, assuming they do not disconnect the auto pilot at DH in a CAT I or II?

Normally all landing calculations are done without the reverse thrust.And usage of reverse thrust varies between the airport requirements(noise issues),crosswing requirements and operational requirements of the airplane and the runway.

Reverse thrust is not operated by the autoland system nor its a part of it.Pilots choose the amount of the reverse thrust and depending on the conditions.

Just to clearify something here.You can make an autoland on a CAT I day,so you don't have to disengage the AP on the DH.But on the other hand you may compleate the landing on a CAT II approach with a manual landing after the DH(if you have the visual ques)
follow me on my facebook page" captain wing's journey log"

Who is online

Users browsing this forum: Apprentice and 9 guests