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Are the ailerons for a Gulfstream III controlled cables with hydraulic boost? Also, is it possible that an aircraft mechanic could easily access the control to tamper with it?

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    $\begingroup$ @Robert some mechanical details here might help. Maybe there's a crucial linkage he could snip somewhere (I really hope this is just for a work of fiction!) $\endgroup$ – Andy Sep 21 '16 at 12:46
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    $\begingroup$ At some point you might want to just hand-wave the details. You're writing a novel, not a handbook on how to commit sabotage. The few G-III mechanics that notice the inaccuracy will no doubt appreciate that you're not providing an instruction manual for bad guys. $\endgroup$ – Dan Pichelman Sep 21 '16 at 12:54
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    $\begingroup$ @Andy I'd like to think anyone in a position to commit such a crime would already have the knowledge without Aviation.SE. $\endgroup$ – Notts90 is off to codidact.org Sep 21 '16 at 12:57
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    $\begingroup$ @Andy - Yes! - It's a science fiction novel. I want to make that very clear! See my blog novelwrites.com/my-books I think I am just going to go with a snipped cable and my alien controlling the failed aileron to save everybody. Dan is right - I really don't need in-depth detail - I just don't want to make something up that would look really silly for anyone with some knowledge of how a plane works...Thanks for the feedback! $\endgroup$ – ngolden Sep 21 '16 at 14:32
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    $\begingroup$ @ngolden I'm just being facetious. Ever since Snowden spoke up I figure every time you you type words like "sabotage" and "airplane" in the same sentence it gets flagged for an analyst. Rarely are my comments to be taken seriously. Especially if there's an emoticon :) $\endgroup$ – TomMcW Sep 21 '16 at 19:03
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Yes, the flight control surfaces on the Gulf Stream III are moved by cables with hydraulic assistance.

From a study guide for the type.

The flight controls on the G III are cable driven with hydraulic boost.. They are powered by both the "Combined" and "Flight" hydraulic systems. Each of the systems provides 1500 psi to the flight control servo actuators. When the landing gear or flaps are extended, the combined system pressure increases to 3,000 psi. If one system fails, the remaining system pressure increases to 3000 psi. Failure of one hydraulic system therefore, does not result in a loss of control effectiveness.

As to whether a mechanic could interfere with the controls, of course. But for what purpose? I am not sure that I understand what you mean by "tamper" but I assume that you mean sabotage. If so, then there are multiple ways to do this but I see no point in speculating as to what someone might do or why.

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  • $\begingroup$ Re: for what purpose. According to OPs other question, they are writing a novel and want credible sabotage ideas. aviation.stackexchange.com/questions/31686/… $\endgroup$ – Notts90 is off to codidact.org Sep 21 '16 at 13:12
  • $\begingroup$ @Robert Thanks. I'll stay clear of the motivations :) $\endgroup$ – Simon Sep 21 '16 at 17:37
  • $\begingroup$ @Caterpillaraoz I really wish I never asked this question because people keep finding it concerning. Hopefully my science fiction novel that I am almost finished with will be picked up by a traditional publisher and you will be able to read how there was a problem with an airplane's aileron but one of my main characters (an alien from Kepler 186f) saves the day...please read my previous comments - thanks! $\endgroup$ – ngolden Sep 26 '17 at 18:39

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