Jonathon,

From the team from your request,

I can’t see that the transponder cable is near the ADAHRS cable and I know it’s not near the ADAHRS. I turned off the transponder (STANDBY) and the flashing continued.

I also turned on the landing light, taxi light, strobes, and nav lights one at a time and saw no change with each.

I then disconnected the ADAHRS. The 6-pack display shows red X’s through all intruments, but there is no flashing.

Hope this helps.