[Psychophysiological aspects of the color coding of pilot navigational information on onboard electronic displays]

Psychophysiological characteristics of pilots were compared when they used a color or a black-and-white electronic indicator in simulating a landing approach on a pilot trainer. No significant differences were seen in the objective evaluations of the visual function or in the precision with which the prescribed flight profile was maintained. However, subjective preferences were given to the color indicator. When the task was more complex (simulation of the deviated landing course), the time spent on looking for significant symbols and on recovering the necessary course decreased, if the pilots used a color indicator. It is concluded that the use of a color indicator can be redundant in performing simple tasks and therefore indifferent for pilot activities but it can be useful in performing complicated tasks when the pilot has to make a precise and quick assessment of the situation.