Aztech

You may not be utilising the "cross control technique" but the aircraft is!

That is precisely my point. The flight control surfaces are “crossed”, even though the control inputs are not. That is why pilots who have extensive experience with crosswind landings in aircraft with traditional flight controls, often need time to get accustomed to the control inputs required when they transition to the Airbus.

This thread is started with the basic question of:
Can Airbus utilize Side Slip Landing Technique? and if not Why?
(side slip landing technique for this discussion means to establish in a side slip prior to flare)

Though it is reemphasized that Airbus recommends crab-decrab technique for landing in its FCTM. The reasons for that are possibly in this thread. These valuable explanations may ease the minds of those who are transitioning from the side slip technique.

Once again many thanks to those who had contributed to the search for this answer, especially the explanations. I have gained much. Thanks also to those who had given their inputs for the use of the different landing techniques and why not the other. I learn no less.

Many has and will continue to chant the mantra, the moment you cease to learn is the time you cease to fly.

Cheers to the camaraderie of aviators.

vilas,

Thanks for your summary and views. Not able to source for the Flight Safety Conference document yet. Any chance you can share it?

A good suggestion to see how the "aircraft" works by looking at the sim. As you had mentioned the autoland pilot will centre the heading and apply the aileron to level the wing for crosswind landing.

A question from this. Some has mentioned that they expect the aircraft to maintain wings level while they centre the nose as they are not demanding any change in the roll rate and expect the aircraft to keep 0 roll rate by itself (meaning the computers will order the necessary aileron output).

We know the aircraft outputs aileron for wings level but would this be done by the computer or is it expected from the pilot/autopilot? In other words, while manual land, when the pilot centre the heading would he need to level the wing or would the computer do it? (This is with reference to crosswind value which does not require a partial side slip at touchdown). Could you please verify for us with your ideal controlled simulator environment?

Thanks very much.

Vilas,

What MD83FO posted is a document from Flight Safety Foundation (ALAR), but a copy of it has been reproduced by Airbus in "Getting to Grips whith Approach and Landing accident reduction" Briefing Notes "crosswing landings".

I cannot provide a link, but it won't be a problem for you. :)

Gryphon and titaniumwings
Thanks I have that entire series and have read it. It is old. The safety conference I quoted is March 2014.
titanium wings, as quoted by ACMS in post 5 when you decrab you do not require aileron as the yaw will not cause roll because the FBW will hold level yes even in manual flight. Off course to do that it will apply aileron, spoilers but you don't have to apply. You only apply aileron if required to keep on the centre line. I am not able to post the conference report. Sorry about that. Lastly I would add that it is a very easy aeroplane to fly but not that easy to understand because of it's computerised nature. So it is safer to stick with manufacturer's recommendation than devise your own procedure because you do not have access to all the software that goes into the design and even it were available most of us would clueless unless you have software background.

Goldenrivett
I mentioned that a modification was done to improve the aileron effectiveness but I couldn't locate it. Here is that Mod after Hamburg incident of wing scraping the runway.
The reduced effect of controls was not documented in the system description and was unknown to pilots or the training department.
By now the Flight controls laws logic has been modified with a modification of transition from flight to ground lateral law. This improvement has been certified in 2012 in the ELAC standard L96 and is available through Service Bulletin ref 27-1225.

vilas,
Thanks for the update. Do you have any more info on what the mod actually does?

Goldenrivett
Unfortunately I have lost access to the MOI. But what I quoted is mentioned in the inquiry report. If you google it you will find.