We have a page dedicated to used Narco avionics at www.avionicslist.com/narco_avionics.phpFactory turn-around on repairs can be expensive and can take months. Many times it's easier and much cheaper to purchase a used working radio. This can be especially true for transponders with cavity tubes.Keep 'em flying!

Used Garmin 430's can be found athttp://www.avionicslist.com/garmin430.phpHave seen as many as 4 units listed recently. 430 training materials and installation kits are also listed.

If you are looking for used avionics visit our site AvionicsList.com. We have hundreds of listings for ARC, Garmin, King, Narco, Collins, and Apollo UPS aircraft radios. We have an RSS feed for the most recently added listings. Buyers and sellers can also post free avionics classified ads.Good luck with your avionics search!AvionicsList.com