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Aeronautical charts: Difference between revisions
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A not on using old charts
(→VFR charts: + Note about age and magnetic variation) |
(A not on using old charts) |
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The AIP contains many charts. Most of these are in the AD section where details and charts of all public aerodromes are published, sometimes charts with the air routes can be found in ENR. | The AIP contains many charts. Most of these are in the AD section where details and charts of all public aerodromes are published, sometimes charts with the air routes can be found in ENR. | ||
== A note on using old charts == | |||
While you can use old charts for navigation, in particular VFR navigation, there is in particular two things to take into account: | |||
* Radio frequencies and names of fixes might have changed | |||
* The magnetic north pole is not fixed, which will cause some problems: | |||
** The magnetic variation shown on the chart is probably incorrect | |||
** In rare cases runway numbers are changed as they are based on the magnetic heading | |||
The magnetic variation is calculated in FlightGear and can be found in the [[Property tree|property]] <code>/environment/magnetic-variation-deg</code>. One way to get those for the legs of your flight plan is to take the UFO and look the property up in using the [[property browser]] in the middle of each leg. On a shorter route it may be sufficient to only take the magnetic variation in the middle of the route. | |||
[[Category:Aviation]] | [[Category:Aviation]] | ||