Trim with Auto Pilot.

[mimmonick]

Dear peter,

Why with some aircraft, trim disengaged options when autopilot in engaged won't work ?

I have buy ERJ145 as not longer and when I engaged AP the axis trim is free to move it and not locked.

Thanks.

[Pete Dowson]

Why with some aircraft, trim disengaged options when autopilot in engaged won't work ?

I assume they are not using the FS autopilot. FSUIPC has no way of detecting when some alternative A/P programming is controlling the aircraft.

If aircraft developers choose to develop their own autopilots they need to take care to disconnect the trim axis themselves when it is engaged. They have probably overlooked the fact that FS does provide an analogue trim input which some folks take advantage of, whether through FSUIPC or otherwise.

Regards,

Pete