Illuminate the pilot's footwells with a bright red light. There is normally no illumination there at all, plus it takes up a fairly large percentage of their viewable area when looking at their screens.
Or, change the background colors of all the screens from black to red. That might harm usability too much though. Maybe change all the other switch backlighting over to red. Or change the cabin overhead lighting over to red.
To the greatest extent possible, the entire environment and interface needs to communicate the modal shift. And pilots would need to train on this shift constantly so that recognition, and the appropriate shift in thinking, would happen habitually.
Illuminate the pilot's footwells with a bright red light. There is normally no illumination there at all, plus it takes up a fairly large percentage of their viewable area when looking at their screens.
Or, change the background colors of all the screens from black to red. That might harm usability too much though. Maybe change all the other switch backlighting over to red. Or change the cabin overhead lighting over to red.
To the greatest extent possible, the entire environment and interface needs to communicate the modal shift. And pilots would need to train on this shift constantly so that recognition, and the appropriate shift in thinking, would happen habitually.