PPRuNe Forums - View Single Post - Side Slip (wing down/cross control) Landing Technique on Airbus (A330)
Old 12th Nov 2014, 08:59
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RetiredBA/BY
 
Join Date: Oct 2007
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Age: 79
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Quote: I trained in Canada where they taught the wing down technique. When I got back to the UK I was made to use the crab technique by RAF QFIs. I continued with the latter until I got to ETPS and subsequently onto B Sqn at A&AEE. During my time there I did a considerable amount of work on landing techniques where I was given carte blanche to try what I liked. My findings were conclusive - wing down is far superior. OK, so you land on one wheel, but you are still, in fact, still partially wing bourne at this time. Advantages are as follows: the fine judgement on when to kick off drift is very difficult to get right and, if you don't, the ac will land with crab on which can significantly stress some ac. In strong, gusty X winds, with wing down, you land with the control deflections which are exactly what you want for the roll out which prevents the arm and leg blurr that usually follows a crab touch down. It is easy to land without drift because the instant of touchdown is not critical and so is a much smoother. I have used this technique with ac ranging fom Slingsby T67s through to VC10s taking Comet and Lancaster en route. The only ac not suitable for this treatment are things like 747s A340 and B52. Incidentally, I have fair experience on both A320 and B737. There is no mystery - they both handle like normal ac. In fact I found the A320 a little nicer to handle manually than its rival. (Retire to WWll bunker at the end of my garden). As you may appreciate this is a big hobby-horse for me, but I do wish the RAF had been broad minded enough in times past to get away from sacred cows and try different techniques. Unquote.



As an ex RAF standards QFI, and later Boeing TC (with time on the VC10 too) I can assure you the RAF teaches the crab technique because it works so very well on all types (although I have no Airbus experience) and on podded aircraft minimises the chance of pod strike. Why change a perfectly good technique and on my Boeing conversion at Seattle, it was a fully approved technique. The thought of significant bank near the runway with a CF6 hanging under the wing fills me with dread, as does the thought of landing in a 40 k crosswind without decrabbing !

In my almost 40 years of flying, RAF and civil, the ONLY time I ever saw a wingdown crosswind approach was when my Boeing was making a coupled approach.

If it ain't broke why fix it ?
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