The work of the devil, I say.
You dont want to get involved with it, map, pencil, and eyeball is all you need. If it was good enough for my Dad in the RAF to fly all round Europe, it is good enough for me. God gave you eyes for a reason.
Terribly unreliable as well what with batteries running out, GPS signal being switched off and the MOD jamming trials all round the country.
Couldn't agree more. A real pilot, with a hairy chest, is prepared to
die if he gets lost. It's a matter of honour.