The course set by the rotary CRS control is indicated by the rotating card registering against the larger of the two fixed yellow triangles. The reciprocal of the selected course is indicated by the smaller of the two yellow triangles.

Deviation of up to 10 degrees left or right of the selected course is indicated by the white deviation bar. The deviation bar remains vertical and registers against a scale of dots that each represent 2 degrees of deviation.

To centralise the deviation bar, the aircraft should be flown towards the bar.

The ‘To’ and ‘From’ indicators identify which sector the aircraft is in relative to a line 90 degrees off the selected course. Therefore the ‘To’ indicator will be displayed only when the bearing is less than 90 degrees off the selected course and the ‘From’ indicator will be displayed when the bearing is greater than 90 degrees off the selected course. The words ‘To’ or ‘From’ are displayed on the same rotating barrel indicator that displays the red and white power failure flag.

Note that the indicators do not confirm that the aircraft is heading towards or away from the VOR beacon as the logic disregards aircraft heading.

When power is deselected a red and white warning flag will appear, replacing either the ‘To’ or ‘From’ indications.