Icom IC-A25 Full Manual - Page 19

Crosschecking position

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5 VOR NAVIGATION Flying to a VOR station (Continued) THE AIRCRAFT IS ON COURSE 123.65 VORTAC SEATTLE 116.8 Ch 115 SEA Heading 66 310 320 330 340 350 300 290 280 270 0 10 20 30 260 40 250 50 240 60 230 VOR 70 220 station 80 210 90 200 100 190 110 180 170 160 150 140 120 130 N Magnetic north THE AIRCRAFT IS OFF COURSE 123.65 VORTAC SEATTLE 116.8 Ch 115 SEA Aircraft should heading 66 be Aircraft heading 60 (6 off course) Flown course 310 320 330 340 350 300 290 280 270 0 10 20 30 260 40 250 50 240 60 230 VOR 70 220 station 80 210 90 200 100 190 110 180 170 160 150 140 120 130 N Magnetic north DDCrosschecking position 1. Select 2 VOR stations on your aeronautical chart. 2. Set one of the VOR station's frequency. LLNote the heading from the VOR displayed on the CDI screen. 3. Set another VOR station's frequency. LLNote 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. 310 320 330 340 350 300 290 280 270 0 10 20 30 260 40 250 50 240 60 230 VOR 70 220 station 80 210 90 200 100 190 110 180 170 160 150 140 120 130 123.65 VORTAC OLYMPIA 113.4 Ch 81 OLM 310 320 330 340 350 300 290 280 270 0 10 20 30 260 40 250 50 240 60 230 VOR 70 220 station 80 210 90 200 100 190 110 180 170 160 150 140 120 130 123.65 VORTAC SEATTLE 116.8 Ch 115 SEA N Magnetic north 5-4

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5
VOR NAVIGATION
5-4
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.
Flying to a VOR station (Continued)
VOR
station
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330 340
350
N
Magnetic
north
Heading 66
VOR
station
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330 340
350
N
Magnetic
north
Aircraft should be
heading 66
Aircraft heading 60
(6
off course)
Flown course
123.65
VORTAC
SEATTLE
116.8 Ch 115 SEA
123.65
VORTAC
SEATTLE
116.8 Ch 115 SEA
THE AIRCRAFT IS ON COURSE
THE AIRCRAFT IS OFF COURSE
VOR
station
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330 340
350
N
Magnetic
north
VOR
station
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330 340
350
123.65
VORTAC
SEATTLE
116.8 Ch 115 SEA
123.65
VORTAC
OLYMPIA
113.4 Ch 81 OLM