"Icebound" wrote in message
...
But they don't have to be. The radials can be realigned to degrees TRUE.
Magnetic navigation would cease to exist. All nav would be done by GPS.
All directions will be stated in degrees TRUE. Some repainting of runway
numbers required, to match.

The nice side-effect being that after this change, you'll never have to
rename your runways and repaint the numbers due to changes in magnetic
variation (as I believe Bourn in Cambridgeshire did a little while ago).

:-)

D.