On Dec 12, 12:13 pm, C J Campbell
wrote:
On 2007-12-12 10:28:52 -0800, Paul kgyy said:

Looking over ads for used aircraft, I occasionally see a combination
of a Garmin 430 GPS with a MX-20 mfd.

What does the MX-20 display provide (other than size) that you don't
get with the Garmin 430?

Does the 430 do airways?

Nope.