i think it's rudder, considering the fact that the rudder system does provide a little bit of nosewheel steering

It is not the rudder that controls the nosewheelsteering but the rudder pedals! You can actually hold the nose wheel steering wheel and operate the rudder pedals without moving the nose wheel. That's how the check the rudder control before each flight. Daniel Verhaal

Rollout gives center line steering but the autopilot needs to be disconnected to steer off the runway otherwise it will probably steer back to the centreline.

Rollout gives center line steering but the autopilot needs to be disconnected to steer off the runway otherwise it will probably steer back to the centreline.

I think this is what the most people wanted to know ... just disengage A/P to taxi and not disengage it to be able to stay on the centerline with ruderinputs...

I did a full on autoland the other night with trackig afterwards. I had rollout on the PFD; not sure what other settings i had but it does work and works very well

The plane taxis itself now? I'm sorry to say but pilots aren't going to survive long :\.

Yep, people are still getting confused here...

I'm talking real world operations.. Even the fail operational Autopilot that allows a CAT3B autoland, is not perfect and needs some work.. It still has issues with not touching down on the centerline.. WInd certainly plays a factor.. That's why different companies have different crosswind limits for Autoland.. Procedure in most 737's is, touchdown, autopilot off and manually steer on rollout..... Rockwell Collins is currently trying to convince Boeing to have all their Next Generation aircraft built with the exact avionics as the 787..

The plane taxis itself now? I'm sorry to say but pilots aren't going to survive long :\.

nobody said that ...

I'm talking real world operations.. Even the fail operational Autopilot that allows a CAT3B autoland, is not perfect and needs some work.. It still has issues with not touching down on the centerline.. WInd certainly plays a factor.. That's why different companies have different crosswind limits for Autoland.. Procedure in most 737's is, touchdown, autopilot off and manually steer on rollout..... Rockwell Collins is currently trying to convince Boeing to have all their Next Generation aircraft built with the exact avionics as the 787..

that makes more sense now :)

Hi I work on the 737NG daily as ground engineer. I never saw a 737NG that as a rollout function for the Auto Flight system, maybe there somewhere in the world.The 737 NG is a Cat IIIA airplane. The Auto flight system is capable to the steer the airplane until touchdown, after that you have to do it your self to keep the airplane on the runway. To be CATIIIB airplane you need to have 3 Autopilots like the 747 ,777 and 767. and also many more system should have 3 seperate system. For example the Radio Altimeter system needs also 3 system, The 737's I know has only 2. The 737 have only 2 Autopilots as you can see on the MCP. The rudder have no autopilot actuator installed for 737, For the rudder there is the Yaw damper to assist during turns but that's no autopilot function. For the rollout function to work the rudder also needs a autopilot actuator.

nobody said that ...

Never said anyone did, I tend to stray off topic alot, and for a topic like this, I just skip or quick read all the other posts so It's quite easy to go stray.

I will clear up some confusion on the Autoland function.. You all know by now the procedures how to set an autoland up, but, no 737 has a autopilot function that will steer the aircraft once you've touched down.. The autopilot must be disconnected, you can disconnect even if you have the runway in sight and land manually, this is done frequently.. This is because the 737's autopilot doesn't have a direct link to the rudder.. 747,767,777 different story, will track the centerline until you disconnect..

heh.. my kind of plane. It still needs a pilot instead of a computer programmer.. :)..

never said anyone did, I tend to stray off topic alot, and for a topic like this, I just skip or quick read all the other posts, as they don't benefit me at all

hehe ... maybe we will see it in the far future ;)but I doubt I will life long enough to see it myself

hehe ... maybe we will see it in the far future ;)but I doubt I will life long enough to see it myself

You'd be surprised, by the rate Airbus is going in terms of removal of the cockpit is astounding which also increases the rate of tree eating.... I prefer a cockpit with buttons far more than I do a flat wall.

Hi I work on the 737NG daily as ground engineer. I never saw a 737NG that as a rollout function for the Auto Flight system, maybe there somewhere in the world.The 737 NG is a Cat IIIA airplane. The Auto flight system is capable to the steer the airplane until touchdown, after that you have to do it your self to keep the airplane on the runway. To be CATIIIB airplane you need to have 3 Autopilots like the 747 ,777 and 767. and also many more system should have 3 seperate system. For example the Radio Altimeter system needs also 3 system, The 737's I know has only 2. The 737 have only 2 Autopilots as you can see on the MCP. The rudder have no autopilot actuator installed for 737, For the rudder there is the Yaw damper to assist during turns but that's no autopilot function. For the rollout function to work the rudder also needs a autopilot actuator.

You sure about that? As far as I know the ISFD is the 3rd source.Ref: http://www.boeing.com/commercial/aeromagazine/aero_22/737approach_story.htmlRef: http://www.b737.org.uk/glareshield.htm

From line number 1278 onwards (Feb 2003) the Rockwell Collins enhanced MCP was introduced. This was designed to operate with the new Collins enhanced digital flight control system with integrates the autothrottle computer and Flight Control Computer (FCC) to enable Cat IIIb autoland. Note the Cat IIIb EDFCS has a rudder servo and can perform an engine out autoland.

Thanks,Matt