will44s

I'm not a garmin expert but I think the Mapmx to the g5 only provides gps data and not navigation data. This is a substitute to not...

The lack of Mapmx may not be your problem, if the order of Nav sources in the g3 isn't configured right it will present the same problem.

The install manual shows a single mapmx serial from the navigator being split to the g5 and g3x like this. If the mapmx input format...

The cynic would mention that the aluminum parts are a tiny part of the build cost, most goes to an engine and avionics.