Tarver Engineering

"Richard" <richard@ms.org> wrote in message
news:xmhcb.1931$qK1.2038019@news2.news.adelphia.ne t...
> Probably this has been answered in this forum previously, but I can't find
> it. Sorry.
>
> I recently got into a friendly discussion with a knowledgable CFII who
said
> a Garmin 430 could not be legally used as "sole means of navigation".
> Looking back, I think what he means is that "GPS" (even IFR certified
units)
> can not be used as sole means. Since the Garmin 430 contains not only
TSO'd
> GPS but also VOR, LOC, GS, etc., my position is that this unit (without
any
> other navigation equipment on board) is legal as a "stand alone" for use
en
> route, terminal, and approach . (I know charts are still necessary.)
> Please advise.

The pressure altitude input and operator input baro correction, such as the
new UPSAT unit, will be a requirement for "sole means".

John P. Tarver, MS/PE