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When airborn, plane turns left on its own

Posted: Fri Mar 29, 2024 2:45 pm
by cuttaf
Since I implemented p3d v6, I have had several problems which I can hardly resolve. The major one for the moment is that as soon as the plane gets airborn, before I turn on the AP, it turns to the left. Engaging the AP puts it almost back on track but the PFD shows the plane to the left of the flight director as well as on the left of the flight plan on the ND. The ailerons are steering to the right on the FL/CTR page of the SD. If I turn off the AP, the plane turns left and obviously becomes difficult to fly. But I confirm the plane rolls strait on the runway and no correction is needed.
I have checked about anything I can think of, including reinstallation, calibration, payload etc... I am running FMGS B60.5. Reverting to B58.2 present the same problem. I cannot more recent versions i.e. B60.1, as p3d hangs as soon as the plane start to roll.... But that's another one of my problem! I am running P3D v6.1.11 (patch 3). Note that I also have the problem of severe nose dive when engaging the Descent Phase.
Can anyone suggest a plan for resolution?
Thanks for the help!
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Re: When airborn, plane turns left on its own

Posted: Sun Mar 31, 2024 7:18 am
by michael1508
Have you checked, if there are still any axis assigned within P3D?
Delete them all in P3D and only calibrate in FMGS.

Re: When airborn, plane turns left on its own

Posted: Tue Apr 02, 2024 3:56 pm
by cuttaf
Thanks for the response... However, I doublechecked and all axis are disabled in P3D, I reconfirmed in the option page and ... no change :-(
Viewing the aircraft from outside, you can see the ailerons moved on each wing as shown on the SD.
Could the aircraft.cfg and/or the configAPFBW.cfg or else be corrupted? strange, because I reinstalled JH FMGS several times with no change.

By the way I run a system with four PC's, with the FMGS server PC separate from the P3D PC.

Regards,
Francis

Re: When airborn, plane turns left on its own

Posted: Thu Apr 04, 2024 6:14 am
by michael1508
really strange. Unfortunately I do not use P3D v6 mysel, but it seems to work for the other users.

Do you still have v5 installed and can run it with the same version of FMGS?

Re: When airborn, plane turns left on its own

Posted: Thu Apr 04, 2024 7:00 am
by jeehell
only explanation I could imagine is lateral CG distribution (fuel?) or rudder trim (in P3D or in my soft, those are different)

Re: When airborn, plane turns left on its own

Posted: Thu Apr 04, 2024 9:02 am
by cuttaf
First answer: No I nolonger have P3D v5 installed.

Second answer: I did check fuel balance and weights and it is OK. Engines are running with the same power and I don't have the left wheel hanging out....The ruder actually autotrims but it is probably to compensate for the ailerons. When going to manual flight (AP off) and resetting the rudder trim to zero, it makes no difference in behavior. If you look at the picture, only the ailerons are moved.
Where could I trim in P3D?
Could it be FSUIPC? But I don't use it for controls... I have all Skalarki devices.

I appreciate your interest in my problem! Thanks.

Rgds, Francis

Re: When airborn, plane turns left on its own

Posted: Thu Apr 04, 2024 7:45 pm
by michael1508
Does the flight control check after engine start work correctly?

Re: When airborn, plane turns left on its own

Posted: Mon Apr 08, 2024 12:22 pm
by cuttaf
Thanks for the follow-up, but flight controls check and work OK. During the TO phase, ailerons are flat.
in a couple of weeks, I will proceed with a complete re installation of P3D v6 and JH FMGS on the main and server computers.
I'll let you know how it turns out.

Rgds, Francis