auto pilot will not engage

[machie 1]

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

 

Cheers

 

Dorn Cranert

[Swofford 155]

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.

 

[Kaly 22]

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