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Old 31st December 2000 | 16:26
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John Farley
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Genghis.

Happy New Year (probably the most significant bit of this post&#8230

I have hung back from replying hoping that somebody had something of real import to put to you. Now it has got to the point that I am afraid you would sooner have any reply than none!

You say the “company schedules” call for the aileron doublet. Just what schedule are we talking about? A flight test schedule submitted to a licensing authority with a view to certification a mod?

 If so, then the following (in no particular order) may have all occurred to you.

 Perhaps the writer is not experienced in these matters.

 Perhaps the writer is very experienced in these matters and has been caught out by some unusual aircraft in the past

 Perhaps the aircraft is known for possessing a large adverse aileron yaw term

 In the grand scheme of things it won’t take a moment to do so what the hell

 If the aircraft has split controls it may handle in quite an unusual way when the ailerons are used one at a time. (I don’t know what certification requirements have to be met in what is an emergency condition – but I have vivid memories of doing a full rudder sideslip with the ailerons disconnected in one current twin engined turbo prop mil/civil transport at cruise speed only to find that I could then abandon all the controls and they stayed just where they were…ummmm)

JF