An aircraft is flying on the true
track 090° towards a VOR station located near the equator where the magnetic
variation is 15°E. The variation at the aircraft position is 8°E. The aircraft
is on VOR radial:
The aircraft is flying towards the
VOR on a TRUE TRACK of 090° along a given radial and the reciprocal of 090° is
270°.
However, as all Radials from the VOR
station are Magnetic Bearings FROM the station (QDR) we must take Magnetic
Variation into consideration.
We have been given Magnetic Variation
at the aircraft and at the VOR; the question is which applies? In the case of a
VOR, the applicable MV is that at the VOR, in this case 15° E.
Variation East = Magnetic Least
270°T - 15°E = 255°M
The aircraft is therefore on the R255
radial.