On Wed, 2009-04-29 at 10:59 +1000, Andrew Gillanders wrote:
> I have a question about the HSI in the Piper Seneca. There is a
> discrepancy between the magnetic compass and the HSI, equal to the
> magnetic variation. So, the HSI seems to be displaying true heading.
> However, everything I rea
I have a question about the HSI in the Piper Seneca. There is a
discrepancy between the magnetic compass and the HSI, equal to the
magnetic variation. So, the HSI seems to be displaying true heading.
However, everything I read about HSI's says that it should display
magnetic heading. Since
