I have dual adahrs 5600 screens and vizion 385 autopilot. Question has come up about tiebreaker in the instance of if it happens-- which adahrs to believe? Having no other steam gauges or real estate for them, would the vizion be a reliable wing leveler/ tiebreaker even in the case of pitot/static failure? I see Rob uses the D2 assuming for a tiebreaker?