On Nov 29, 3:30*am, John Smith wrote:
wrote:
So - use your altimeter (set correctly) for IFR, and use your aviation
GPS to help avoid hitting the hard stuff!
Actually, I use my eyes for that.
Well, if you can see out the window, who cares about altitude anyway!

Now, at night, no moon, some haze, maybe over water....

Wouldn't that be IFR?

Or really stupid night VFR...(which I realize is not legal in some
countries).

Of course, there has never been a case of a misset or misread
altimeter resulting in a pilot running a perfectly good airplane into
the ground, has there - especially with those horrible triple-pointer
altimeters! Much harder to do that with a GPS, especially if it has a
terrain database to give AGL height (well, you still have to read the
instruments...). Which is why most modern avionics setups have
exactly that arrangement. And it can be done cheap - $200 PDA with
GPS and some software does the same thing.

Kirk