This is a very high level question. Is it possible to render to a custom MSFS panel using Unity?
It’s unclear what you are asking. Do you want to render a MSFS aircraft inside Unity? If so, you would need to import the GLTF model.
Do you want to create a model in Unity and use it in MSFS? Probably not unless you can export it into the correct GLTF model.
So you see, while different platforms all use 3D models, the format of those often differs enough to make it complicated.
Apologies if I was unclear. I’m talking about the panels that you can see if VR, such as check-list, etc. I understand you can create custom ones too. My question is, can this be rendered to from Unity?