Human Factors Considerations of Aircraft Displays 981237
In current general aviation aircraft it is not uncommon to find very old designs of electromechanical instruments next to state of the art pixel-based displays. A number of these instruments appear to be inadequate from a legibility, interpretability, and operational point of view. This paper contains a review of the relevant display reading performance literature. The key principles (luminance contrast and critical detail) of display legibility are demonstrated using a general aviation altimeter as an example. A particular safety concern is the legibility of the pressure display found on typical altimeter instruments.