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Air Law

1.4.6.8 Magnetic course

When flying cross-country from A to B, it is impractical and nearly impossible

to have the correct altimeter setting because the pressure varies from area to

area. Therefore, it has been determined that when passing 3000 feet (transition

altitude), the pressure should be set to the standard pressure of 1013.25 hPa.

In the Copenhagen area, however, the transition altitude is 5000 feet.

Here is the system.
Magnetic Course
All VFR flight levels end with a 5.
degrees degrees
When flying eastbound courses, the number

before the 5 is odd.

When flying westbound courses, the number

before the 5 is even.

When determining the course, it is the magnetic Track that should be
considered, not the heading.

During descent, the local QNH should be set when passing the transition level,
which is the lowest usable flight level on the day.

Only altitudes up to FL 115 are included here. The highest FL for VFR flight is FL

195.

This system ensures that aircraft flying east use one altitude and those flying in

the opposite direction use another. However, aircraft under climb to a higher

cruising altitude than the one you are flying in will not naturally adhere to these

procedures, so keep a lookout.

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Flight Theory PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 63