Originally Posted by
Treetopflyer
According to Garmin, the GPS 20A can also add higher-performing GPS navigation to your G3X system, but I don't think it can "legally" be used as a navigational source when entering IMC. I'm installing this exact same system in my RV-7 that I'm finishing up, but according to my avionics guy, he said that I'd need a TSO'd GPS to "legally" enter IMC. You may want to send Garmin an email and hear what they have to say about it. You can reach them G3xpert.com. I'd be interested to hear what you find out.
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