You can find all the main input events and variables in the SDK documentation
https://docs.flightsimulator.com/html/Introduction/Introduction.htm
However, if you have a purpose built cockpit for that plane including hardware and such, I’d consider a 3rd party option like Mobiflight, Air Manager, or some other solution to interface the hardware to the sim. It tends to be far more comprehensive and works on commonly available Arduinos and such as @JCSLOVE said.