AviationBanter - View Single Post

**Maxwell** · April 5th 07, 07:49 PM posted to rec.aviation.student,rec.aviation.piloting

"Mxsmanic" wrote in message
...
writes:

And that tells you your course, not which direction the nose is pointed.

For navigation, your ground track is more important.

There is no GPS instrument available that will tell you which way
your nose is pointed.

As I've said, you just use two.

The only two places on Earth a magnetic compass doesn't work in an
airplane are over the north and south magnetic poles.

No. There are thousands of local magnetic anomalies that can make a
compass
useless.

Piston engines have magnetos which generate the spark plug firing
voltage, and only the spark plug voltage.

Last time I checked, sparks counted as electricity.

Then hook up a spark plug wire to your GPS.