D Crosschecking Position - Icom IC-A25N User Manual

5
VOR NAVIGATION
Flying to a VOR station (Continued)
THE AIRCRAFT IS ON COURSE
THE AIRCRAFT IS OFF COURSE

D Crosschecking position

1. Select 2 VOR stations on your aeronautical chart.
2. Set one of the VOR station's frequency.
L Note the heading from the VOR displayed on the CDI screen.
3. Set another VOR station's frequency.
L Note the heading from the VOR displayed on the CDI screen.
4. Extend the radials from each VOR station on the chart. Your aircraft is located at the point where the lines
intersect.
330 340
310 320
300
290
280
270
260
250
240
230 VOR
station
220
210
200
190
180
170
140
160
150
123.65
VORTAC
OLYMPIA
113.4 Ch 81 OLM
123.65
VORTAC
SEATTLE
116.8 Ch 115 SEA
123.65
VORTAC
SEATTLE
116.8 Ch 115 SEA
0
350
10
20
30
40
50
60
70
80
90
100
110
120
130
330 340
310 320
300
290
280
270
260
250
240
230 VOR
station
220
210
200
190
180
170
140
160
150
330 340
310 320
300
290
280
270
260
250
240
230 VOR
station
220
210
200
190
180
170
140
160
150
310 320
300
290
280
270
260
250
240
230
220
210
200
190
180
170
160
123.65
VORTAC
SEATTLE
116.8 Ch 115 SEA
5-4
0 N
350 Magnetic
10 north
20
30
40
50
60
70
80
90
100
110
120
130
0 N
350 Magnetic
10 north
20
30
40
50
60
70
80
90
100
110
120
130
0
330 340
350
10
20
30 N
40
50
60
VOR
70
station
80
90
100
110
120
130
140
150
Magnetic
north