In my personal opinion I would say that the location and the presentation of the AHRS switches are in the worst possible location . Directly underneath these switches you have the DG/MG for the compasses which you would use every time you approach a rig .... so if you push the wrong switches approaching the rig at night especially you'll have all the screens fail except the ISIS which its location makes no sense either . These switches aren't caged unlike the AVCS overhead why cage the AVCS and not the AHRS maybe HC could shed some light.