Aircraft Operations. Volume II - Construction of Visual and Instrument ...

Part II — Section 4, Chapter 1, Appendix A II-4-1-App A-13
Altitude in thousands of metres
Altitude
feet
x 1 000
42
39
36
33
30
27
24
21
18
15
12
9
6
3
55°
Example Number 3
Example Number 1
Example Number 2
0
0
0 1 2 3 4 5 6 7 8 9 10
Distance in nautical miles
For distances over 10 miles and/or altitudes in excess of 35 000 ft, multiply chart values by 10 (e.g. read as
1 mile at 4 000 ft, or as 10 miles at 40 000 ft).
To determine slant range, extend altitude line to a point vertically above ground distance. Follow arc down to
base line and read slant range (Example No. 1).
To determine ground distance, read slant range arc upward to selected altitude line. Follow vertically down to
ground distance line (Example No. 2).
To determine minimum usable ground distance to VOR/DME fix, enter with the maximum altitude for the
procedure. Ground distance is found vertically below intersection with diagonal (Example No. 3).
Figure II-4-1-App A-7. DME slant range vs. ground distance/
Minimum usable ground distance to a VOR/DME fix (non-SI units)
___________________
Slant range
Altitude
feet
x 1 000
42
39
36
33
30
27
24
21
18
15
12
9
6
3
23/11/06