Cross posting as I don't know which sub-forum is likely to have the most exposure with this area. Most users here I'm guessing are mostly using CAN, LIN, etc but maybe there some aviation/defense people here?
https://forums.ni.com/t5/PXI/Has-anyone-attempted-and-or-had-success-w-using-an-AltaDT-1553/td-p/404...
I saw my father do some work on a car once as a kid and I asked him "How did you know how to do that?" He responded "I didn't, I had to figure it out."