Landing task and pilot acceptance of displays.

Abstract

The results of an analytical study of the landing task and an empirical study of pilot preferences of displays for landing in reduced weather minima suggest the following criteria for display evaluation. The information content of the display should allow one to initiate the final approach; to achieve departure and to know of departure from the glide angle; to maintain angle of attack, sink rate, roll attitude, and course; to determine crab angle, when to initiate flare, and heading during rollout. The presentation should be a compensatory display, a simple pictorial indication of the landing situation, and should be on the wind-screen. The display should provide redundant but independent information, require a minimum of user-supplied information, utilize a maximum of gain, provide for removal of a malfunctioning element, and be useful in other phases of landing. Alignment and other adjustments prior to use should be simple to accomplish and should be followed by a simple, foolproof checkout procedure.