Guenseli has a Streamdeck profile for AAO that applies the rotor brake on the H145... How do I find that to assign it to a physical control?  I lookked in Aircraft SDKs, thinking it might be there but nope... https://imgur.com/mzzLYKA

 

They appear to be HVars. You can assign those by switching to MAN (the green buttons below Key Down/Key Up), selecting H: and copy/pasting/typing in the name of the HVar that you see in the SD action.

"Aircraft SDK" is for planes with an actual programmatic SDK, provided and documented by the developers. HVars are just plain MSFS assets, nothing special. Like with IEs, BVars, LVars, developers can just invent them, they aren't part of any standard or spec.

Edited August 15, 2025Aug 15 by Lorby_SI