Mode-S extended squitter? What transmits AdSB in this config? Its What the high flyers use and some us low guys also. I dont see transponders going away, especially as radar backup in the terminal area.
Yes, its part of transponder. Also FAA can monitor validity in use and after implementation date will tell you if its hosed up, not ATC another compliance unit. Now you can request a report from them to get a status of your ADSB transmissions.
If you,re going to need ADSB out where you fly add a garmin 330es transponder for about $4k and you,ll be all set. 650 hooks to 330 for adsb out, also gives tis traffic on the gps
You gotta be kidding, this is a maintenance item and needs to be logged in aircraft records when performed. where in the world did you get the idea this would self upfpdate, point us to documentation