ADVANCED PRIMARY NAVIGATION DISPLAYS FOR PRECISION AND NON-PRECISION APPROACHES

摘要

A flight display system provides advanced, or previewed, indications of the aircraft's position relative to an approach via a primary flight display. The primary flight display displays one or both of horizontal and vertical deviation indicators with respect to the aircraft's current position prior to the aircraft reaching the final approach. A feature of the horizontal and vertical deviation indicators may change on the primary flight display when the aircraft reaches the final approach, such as their color. The display system may also include an approach annunciator that provides an indication of the type of approach and the navigation source for the approach. The approach annunciator is displayed prior to the final approach becoming the active leg of the flight plan. The previewed information may appear automatically on the primary flight display based upon a distance of the aircraft to the airport or runway.