Invalid telemetry output for landing gears

[sicsix]

I've been building out some more advanced shaker transducer effects using additional telemetry now that the PDF containing the format has been released. This is unsurprisingly making it a lot easier to do when you don't have to reverse engineer the format.

I am having the same problem though as in this post from 5 years ago which looks like it hasn't been fixed still > Behaviour of landing gear data in telemetry - Motion Simulators - IL-2 Sturmovik Forum

The LandingGearPressure telemetry values aren't always updated so they are useless for any real usage. For example, if you are travelling on a smooth runway the values will never update and can in fact be complete nonsense depending on whatever happened the last time they were updated. Wheels can be in the air and have non zero values, particularly the tail wheel, but it can happen to any wheel and it appears to be completely random.

The root cause appears to be that for some reason under stable conditions the game is not updating the value sent out via telemetry and unfortunately the value that is being sent is the one from before it was stable.

Can this be fixed? There's no other way to reliably detect whether one or any wheels are in contact with the ground otherwise.

[AeroCrab]

I would also love for this to be fixed but at this point I have to imagine it won't be. I also went through what you are dealing with and ended up just having to work around stuff as best as I could. For starters, I just gave up entirely on the tail wheel for haptic purposes (and for added fun, I think I remember the tailwheel being something other than index 2 on some aircraft). Then I added in a bunch of heuristics based on gear position - which seems to be generally accurate - and AGL (which appears to be based on pilot position and so is variable per aircraft). Oh and also EAS and acceleration to deal with "we're parked but the wind says we're moving" stuff.

The heuristics are, in short, a ridiculous patchwork of nonsense that mostly works(-ish) enough for my purposes, but I do wish the telemetry was accurate instead. I have wondered whether the issues were tied to the individual aircraft (since some seem "worse" than others) but I don't know. I have to believe that if this truly was a trivial "telemetry-only" fix it would already have been done.

[sicsix]

Yeah, I tried a heuristic based approach as well but found that due to the pressure values not updating properly any effect that is relying on them for magnitude or even a simple 'is this wheel in contact with the ground' switch breaks far too often.

It would be amazing if this landing gear pressure bug could be fixed, and at the same time it would be amazing if we could get ground speed included in the telemetry.

Some sort of additional telemetry for the engine would be nice in order to get the ignition state or output power as it's not simple or reliable to infer if an engine is running through manifold pressure and RPM alone. Heuristics including maybe the shake amplitude could be used I guess but having the actual data available would be great. I'd be happy with just having the landing gear pressure bug fixed and ground speed added though, this is just a hopeful request.

Edited April 12 by sicsix

[Arty_Effem]

On 4/11/2026 at 7:11 AM, sicsix said:

the PDF containing the format has been released.

Link?

[sicsix]

On 4/13/2026 at 11:30 PM, Arty_Effem said:

Link?

https://forum.il2sturmovik.com/topic/72965-telemetrydevice-documentation/