Radial = R 050

Selected Course = R 060

Heading is irrelevant

If the aircraft's Radial is on the same side of the VOR as the Selected Course, it will be travelling FROM the VOR.

If the aircraft's Radial is on the opposite side of the VOR to the Selected Course, it will be travelling TO the VOR.

The relative position of the aircraft Radial to the Selected Course and therefore the instrumentation display can be determined by satisfying two conditions.

1.  Is the Radial within +/- 90º of the Selected Course? = YES =  FROM

(R 060 + 90º = R 150    R 060 - 90º = R 330)

2.  Is the Radial within + 180º of Selected Course? = NO = RIGHT TURN

(R 060 + 180º = R 240)

The only two HSI displays showing FROM are A and B and of those only B indicates a RIGHT TURN.