Not sure if its relevant but I had a similar issue in P3D. Randomly during flight the engine would cut out. I was using a third-party program to inject AI aircraft into the sim including some Carenado aircraft which were in my hangar. It seems (after much googling) that the AI Carenado aircraft were probably taking anti piracy measures and setting the mixture to zero causing the cut out failures. Removing them from the AI list solved my problems.
(just to clarify, the Carenado aircraft in my hangar were all legitimate purchases)
I know my issue was related to the engine (mixture being set to zero), and the current issue is with the avionics, so as I said, may be completely irrelevant. Also I dont know if everyone with this problem have Carenado aircraft in their hangar, or even if MSFS2020 uses the hangar to populate the AI ?
I dont have any Carenado aircraft in my hangar, and I also haven`t had any avionics failures, yet !!
Robin
