Figure 30: ADI
Horizontal Situation Indicator
The Horizontal Situation Indicator (HSI) provides a top/down view of the aircraft in relation to the
intended course. The compass rotates so that the current heading is always shown at the top. The
Course Arrow shows the required heading and the Bearing Pointer points to the next waypoint.
Distance to the next waypoint and required heading are shown numerically at the top. The ILS
localizer and glide slope bars are in the center.
Figure 31: HSI