Refer to Jeppesen GSPRM Training Route Manual - Chart "E LO 2".
Find the current aircraft's position, given the following bearing and distance information obtained from SPIJKERBOOR (SPY, VOR/DME, N52° 32' E004° 51’):
Radial: 023°
Distance: 63 NM
Refer to figure.
FIRST METHOD:
(1) Find SPIJKERBOOR and draw a parallel line to the nearest meridian (this will be the True North reference);
(2) Remember that degrees of latitude are 60 NM apart. Using a ruler, measure the distance corresponding to 1º of latitude on the chart (60NM) = 10.5 cm.
Therefore, 63 NM = (10.5 / 60) x 63 = 11 cm;
(3) Using magnetic variation (isogonal line), convert the radial (magnetic bearing) to true bearing:
-
Isogonal line 1ºE:
23ºM + 1ºE = 24ºT
(4) From SPIJKERBOOR true north reference, measure an angle of 24º and plot a 11 cm long line.
=> 63 NM on radial 23 SPY: 53º30'N 005º33'E
SECOND METHOD:
Alternatively, you can use a protractor. Place the protractor over the VOR and match the radials on the map with the degrees on the protractor (it is as if the protractor was aligned with Magnetic North). You can see on the protractor at which degree the lines align to. Plot a 11 cm long line representing radial 023º.
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