For those who have one of these units that the FAA said doesn't conform to the GPS requirements. There is now a upgrade kit to make it compliant. Go to the Dallas Aviaonics website. dallasavionics.com Put in the search box ADS600-EXP. a list will come up. In the list you will find 2 upgrades for this unit, pick the one that applies to your serial number. You have to order from Dallas Avionics as they are now the sales agent for NavWorx. Now the bite! It will cost you $299.00 even though you already paid $2000 for a unit that the advertising brochure says"Compliant to FAR 91.225 and FAR 91.227". "Internal ADS-B Compliant WAAS GPS". "TSO/STC for 2020 ADS-B OUT mandate".. My comments redacted.
Installing the kit is supposed to take about 5 minutes.