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auto pilot will not engage

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2 replies to this topic

#1 machie



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  • 389 posts

Posted 21 September 2012 - 08:03 PM

Hi All,
My Command A button will not light and turn on the autopilot after takeoff---I have a flight plan entered in the FMC (which I build in FSBuild--the auto throttle is on, the flight director is on, I can get the speed button to light, I can get the LNAV to light---and after flying for maybe 5 min I can sometimes get the command light in one of the four buttons to light---help


Dorn Cranert
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#2 Swofford


    Crabby Texan

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Posted 21 September 2012 - 08:14 PM

If you have realistic ap on then you can't have any input from your control surfaces. Make sure you're not moving the yoke or pedals and that they're calibrated. Also the AP won't engage below 400' AGL I believe.

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Randy Swofford

#3 Kaly


    Wing Commander

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Posted 21 September 2012 - 10:18 PM

Yes, the autoplitot is certified for engagement at, or above 400ft AGL ,as per FAA. regulations.
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