A. H. Midkiff (firstname.lastname@example.org),
R. J. Hansman (email@example.com)
2. Identify candidate solutions, including the development of mode awareness augmenting displays.
3. Evaluate the effectiveness of candidate solutions.
A chart of these results is shown below:
The inventory of current AutoFlight Systems identified a lack of feedback in the vertical domain, which is more complex to control than the horizontal domain, leading to the vertical domain being more prone to serious mode related problems. Additionally, the most recent commercial systems are designed to maximize passenger comfort, which may reduce vestibular cueing for pilots. Focussed interviews highlighted the lack of underlying structure to AutoFlight Systems. This lack of structure creates difficulty for pilots and trainers in the development of consistent mental models. In the absence of simple mental models, pilots create their own ad-hoc models baselined from nominal aircraft operation which are of questionable use during high workload, exceptional situations.
A profile display designed to mitigate mode awareness problems has been functionally specified and several static versions have been created. An early dynamic display has been implemented on the ASL Advanced Part Task Simulator. Finally, an evaluation methodology has been created using short interactive scenarios on the ASL Simulator which highlight mode awareness problems in current aircraft. Airline pilots will watch a documented mode awareness problem occur and attempt to identify the consequences of the problem.
This is the EVSD in a VNAV path mode, with the middle loop altitude constraining the path.
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