Hi, I looked up 'gauchissement' and found twisted... I see ''twisted cables'' often in patents in regards to aircrafts and aerospace, eg:

http://courses.swinburne.edu.au/Subjects/ViewSubject.aspx?mi...

http://www.freepatentsonline.com/4047098.html

However, I'm not sure it is what you are looking for. Hopefully it will help...




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Note added at 54 mins (2007-07-26 12:10:32 GMT)
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for cables de tension, here is what I found in Termium:
tension member Source CORRECT

tension cable Source CORRECT

load support cable Source

tension line Source câble de tension Source CORRECT, MASC

tendeur Source MASC

câble porteur de charge Source MASC
DEF – The part of a floating containment boom which carries the load placed on the barrier by wind, wave and current forces. Source

pitch and roll cables probably connected to some pitch and roll transducer (capteur de commande de gauchissement et de profondeur)
check ATA chapters from Google, might give you a good idea of jhow aircraft docs are structured (not only cosmetics...)...CN ...mmmh I'll check it put for you

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Note added at 1 heure (2007-07-26 12:31:49 GMT)
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like a number of other flight controls, the aileron will surely contribute to correct roll

French term (edited): CN

I would not swear on that one, especially as roll cables have not much to do with ATA chapter 63 (the first two digits after that CN).

b) Un facteur de 125% pour les moments de charnières calculés doit être utilisé pour calculer les systèmes de profondeur, de *gauchissement* et de direction. Cependant, un facteur aussi faible que 1,0 peut être utilisé si les moments de charnières sont basés sur des données précises d'essai en vol, la réduction exacte dépendant de la précision et de la fiabilité des données.

http://www.tc.gc.ca/AviationCivile/Servreg/Affaires/RAC/Part...

(b) A 125 percent factor on computed hinge moments must be used to design elevator,* aileron*, and rudder systems. However, a factor as low as 1.0 may be used if hinge moments are based on accurate flight test data, the exact reduction depending upon the accuracy and reliability of the data.
http://www.tc.gc.ca/civilaviation/RegServ/Affairs/cars/Part5...

Aircraft control system failure, aircraft rudder cable failure, aileron cable failure
http://www.ultralightnews.com/safety_bulletins/controlsystem...

I'm only guessing based on the links.

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Note added at 2 hrs (2007-07-26 13:28:40 GMT)
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the CN could be:

Consignes de Navigabilité (CN)
http://acronyms.thefreedictionary.com/Consignes de Navigabil...

Cette rubrique contient la liste de toutes les Consignes de Navigabilité (CN) en vigueur émises par la DGAC

This page includes the list of all the effective AD’s issued by the DGAC
http://www.gsac.fr/php/P_ConsignesNav.php

http://regles.gsac.fr/GSAC/ad_cns.nsf/vwAppliquablesParRefer...

FRENCH AIRWORTHINESS DIRECTIVES
http://regles.gsac.fr/GSAC/ad_cns.nsf/index_EN

Christian can let us know if that would fit! (as it's not my field...)

http://www.dassault-aviation.com

CN 63-11-20 could be certificat de navigabilité or consignes de Navigabilité