I know there have been reports of this previously, but yesterday returning from Kansas City and about 20 miles from home, my Garmin GNS480 with GA-35 antenna suddenly lost GPS navigation integrity. The signal status page showed zero signal on any satellite, which has never happened before.
At the same time, I noticed the G5, Dynon Skyview, and Ipad had all lost their position locks as well. The Skyview also displayed a message of degraded attitude condition or something of that nature.
Having read of this GA-35 antenna failure before, I tried turning off the GNS480, and all the other devices resumed GPS position lock. As an experiment, I turned the 480 back on, and watched everything else lose lock immediately again. It was a very repeatable failure.
Because the GNS480 feeds ADSB out, I filed an ASRS report even though I was only in Class E and G airspace for the rest of the flight. Had I been in IMC, this failure would've been quite exciting!
I know others have had some success working with Garmin to replace the faulty antenna. Mine is several years old so probably outside of any warranty period. Any advice on working with Garmin would be appreciated - I don't exactly have a "dealer" to work with. Perhaps I just bite the bullet and buy a new GA-35?
At the same time, I noticed the G5, Dynon Skyview, and Ipad had all lost their position locks as well. The Skyview also displayed a message of degraded attitude condition or something of that nature.
Having read of this GA-35 antenna failure before, I tried turning off the GNS480, and all the other devices resumed GPS position lock. As an experiment, I turned the 480 back on, and watched everything else lose lock immediately again. It was a very repeatable failure.
Because the GNS480 feeds ADSB out, I filed an ASRS report even though I was only in Class E and G airspace for the rest of the flight. Had I been in IMC, this failure would've been quite exciting!
I know others have had some success working with Garmin to replace the faulty antenna. Mine is several years old so probably outside of any warranty period. Any advice on working with Garmin would be appreciated - I don't exactly have a "dealer" to work with. Perhaps I just bite the bullet and buy a new GA-35?