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The indicator instrument typically looks like this below.

To the right of the arrow is the "flag-warning" tab, which

appears when the instrument is not receiving a usable

VOR signal, e.g. if the VOR station is out of range or out of

service.

The TO/FROM indicator says TO.

At the top you can see that there is 360 to the station (the arrow points N). If

you look below the arrow, you can read which radial you are on (S / 180).

With the OBS- (Omni Bearing Selector) knob you can rotate the compass scale.

If you rotate the scale 180⁰, so that S is at the top, the TO/FROM indicator will

change to FROM (FR).

The FROM indication shows the radial

The TO indication shows the course line to the VOR station.

From any position you can get 2 pieces of information:

- The direction to the station

- The direction from the station

You fly to the station with a TO indication.

You fly from the station with a FROM indication.

Across the middle of the indicator, we see some dots. These

dots represent degrees.

We call this scale the CDI (Course Deviation Indicator). It can show if you deviate

from the set course.

Flyveteori PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© marts 2026 883