Fenix A320 veers violently to the left upon take-off (observed to a lesser degree in other aircraft)

Hi all,

I come here as sort of a last resort. I have been experiencing the bug presented in this youtube video with commentary for the past few months now, to a certain degree: youtube video

What usually happens is that the Fenix A320 veers left on take-off, no matter the weather, the airport, the take-off runway, how much I turn to the right etc. It’s usually “manageable”, in the sense that I can counter the veering with right rudder and keep the aircraft moderately straight, but this is not at all what I think should happen, especially not every single flight. What has also happened to me is a complete lock-up of the rudder in the last position it was in when turning the aircraft onto the runway before hitting TO/GA. Had this happen during a rolling take-off at EPGD a week ago.

I have contacted Fenix support about this but they haven’t been much help. They seem as clueless about this as I am, so this is why I am coming here. Perhaps someone experienced this with another aircraft. The only similar post I found was a reddit thread where the guy was using the Thrustmaster TCA which he isolated as the culprit for sudden left rotation on take-off, but that was on 2020.

The only time where this was completely fixed was when I reinstalled my windows and only installed MSFS 2024 and the fenix A320.

Today, I tried uninstalling, one by one, all community content (by renaming the folder as seen in the video), then FSUIPC, then GSX, then Fenix (reinstall), then MSFS 2024 (reinstall), all performed through Revo to make sure no file is left. The issue is still here and I really don’t fancy another windows reinstall with extensive testing after adding every single addon back.

Has anyone ever had anything similar happen to them? Could this be account-related? (as I was still logged in after reinstalling today) Does anyone at least know what I could debug to find out what’s happening? Maybe something in the developer tools? I’m a technical person so I won’t shy away from more complicated stuff.

Thank you. I’ll update this post if I remember anything

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Hi @vaasxo ,

Thank you for this report. We’ve moved your topic into the User Support Hub.

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Take it up and do a forward slip. Hard left rudder and enough right aileron to keep it straight. Watch the wind speed and direction on the Nav Display. Report back.

Might it be wake turbulence? We find it quite severe and advise our customers to deactivate it until it is less aggressive.

Mathijs

I don’t use AI traffic though. The issue is reproducible at any airport and any weather preset. I’ll give it a try though, thank you

Forgot to mention this but the issue basically resolves itself once I lift off and correct the initial drift to the left, so my bet is that it is in some way related to the landing gear

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Well, there’s a bug in the Fenix and FBW planes where the rudder inputs create changes in wind speed and direction. So, you may feel a crosswind building, but in fact it’s your rudder inputs that are creating the crosswind. It goes away as soon as you take your feet off the rudders. I have only tested this on approach, but it would effect takeoff as well.

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The bug in the video happens without any sort of input whatsoever to the controls. Interesting to know about that issue though, is it sim-related then? How was it even discovered?

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It’s not sim related. The Inibuilds airbuses don’t do it. I discovered it while testing the wide sheer issue that’s been reported.

Interesting, though I still don’t believe this to be related to my issue. After reinstalling windows, installing just msfs and fenix, the bug disappeared, and I tested thoroughly. It appeared at some point afterwards but I could not pinpoint which addon exactly did it, and I’m even less sure now after uninstalling everything and it still happening

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Yes, I was thinking about that. What if your rudders where pulling to one side, and reinstalling Windows cleared that up? I had an issue where my stick was causing every aircraft to roll left. I reinstalled, ran all my calibration software, problem is gone. My hardware is six or seven years old now, so I am sure it’s showing some wear. I have a full set of Virpil gear. Also, check your USB connections. I re-did my USB setup a couple of times. I have all my Virpil gear in the Black bus, my VR headset alone in the Blue bus, and my keyboard/mouse in the Red bus. My setup is very prone to static shocks, so I have to move things around now and then. The Virpil gear is not grounded. If i rub my feet and sit down with the computer off, I can get the lights of the throttle and stick to come on. LOL. So, recalibrate, reinstall, and test on the Inbuilds airbuses, that’s my advice.

I don’t show it in the video but I have checked both the outside and the Fenix config panel → controls calibration (or something like that) and no imputs were being made, with or without my sidestick connected. The only thing I can think of doing now is deepclean my system of anything and everything msfs and addons related, including the registry edit, then seeing what happens after a fresh install

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Mine does the same exact thing. It started several months ago. Could not take off from most airports because I scrubbed so much speed off going full rudder. It’s not wind, it’s not normal, It’s broken. I uninstalled for a while and tried it again recently. Had some normal flights and I was happy to use it again. Of course it started up; same exact issue. It is unflyable. There are plenty others piping up about it in forums here and there. OP you’re not alone and Fenix needs to fix this fundamental flaw.

Have you checked the external view to see what the nose wheel is doing?

I have, and it starts out straight. I’ve had a different issue where a restart of the flight would cause it to spawn at 90 degrees, which is weird because initially, a restart of the flight would fix the main issue lol. This whole thing is a mess

Good to know I’m not the only one. Unfortunately Fenix support seems pretty clueless about this, as am I. The only thing I’ve noticed to improve things is a restart of the flight after initial load in, from the menu (actually clicking on restart flight, not ending it and loading again). What addons/hardware are you using?

One thing I have found out is that the aircraft model initially loads with full right rudder and that waiting for a little longer in that cutscene that happens before every flight does fix the issue. Clicking on start flight only after the aircraft moves on its own towards the runway seems to fix everything. It might be that the aircraft is simply not properly loaded in or refreshed if you start the flight right away, idk what triggers fenix has set on their app or bootstrapper that may be affected by clicking on start flight, but perhaps they can look into it. I’ve already reported this to their support team. It’s still strange how this wasn’t an issue whatsoever on a fresh windows install though, which still makes me think that a 3rd party is interacting with Fenix or their code or app or processes to mess something up badly

I’m using Thrustmaster TPR pedals for the rudder. No conflicts with anything and no other plane of mine has these issues. I’ll try your suggestion and wait at the loading screen for a bit and as some have said, to check out the external view of the wheels. Hopefully this could be the fix as I love this plane when it works. :+1: :slightly_smiling_face: