Aviation Safety and Pilot Control Understanding and Preventing Unfavorable Pilot-Vehicle Interactions (1997) / Chapter Skim
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Pages 161-168
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From page 161... ...
7Findings and Recommendations The findings and recommendations of the Committee on the Effects of Aircraft-Pilot Coupling on Flight Safety were developed during deliberations that included consideration of all information collected by the committee. The findings and recommendations reflect current levels of understanding about APC and the processes currently used to mitigate the risks posed by adverse APC events.
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Finding 1-2. APC problems are often associated with the introduction of new designs, technologies, functions, or complexities.
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Finding 2-3. Conflicting priorities between different control authorities acting on the same effector can cause a severe safety risk or flying qualities cliff when the system is operating at or near the limiting conditions of the effector's positions or rates, thereby creating a latent non-linearity in the effective aircraft dynamics for an unsuspecting pilot.
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Recommendation 3-1. A system should be developed whereby pilots are enabled and encouraged to report unusual events, including events that result from their inadvertent actions, without fear of punitive action.
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This shortcoming should be addressed through improved education about APC phenomena for pilots and other personnel involved in aircraft design, simulation, testing, certification, operation, and accident investigation. Recommendation 4-2.
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Finding 5-2. Situations that appear to be susceptible to APC events have sometimes been ignored on the basis that ''pilots will not (or do not)
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Recommendation 5-3. Tasks should be selected not only to be representative of nominal flight conditions, but also to explore the boundaries and extreme situations that may lead to APC events.
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with the development of effective mathematical analysis methods capable of rationalizing and emulating the experimental results. Recommendation 6-4.
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