Originally Posted by control
What I am thinking about now is that a GTX 45R would provide Backup attitude to an Aera 660.
So one option is to skip the planned backup EFIS (G5) and put that money into a 45R instead of a 35R, Then I would have ADS-B In as well and weather when flying in the US. Problem with this thinking is that the G5 with the optional battery is a great stand alone backup, if I use the 45R/660 as backup then I need to provide a more fault tolerant electrical system...
It is better than nothing, but we wouldn't consider the attitude sensors in any ADS-B receiver to be a substitute for a G5 in IMC. The G5 is the real deal.
We announced last week
that the G5 is now approved as the backup instrument for G500 and G500 TXi systems in over 600 certified aircraft.
The G5 is also a backup for the autopilot system should your G3X Touch display(s) become unavailable.
With your GTN (or Aera 660) and G5, you can fly autopilot coupled to the flight plan anywhere in the world. Now that's a backup instrument!
You might think about buying the GTX 35R and G5 now to complete your IFR installation, then when you get ready to come to the U.S., buy or borrow a GDL 39/39R/50/50R/52/52R ADS-B receiver to connect to your display(s) and receive ADS-B traffic and weather. Your Aera 660 will also communicate via hardwire or Bluetooth to any of those receivers just as it would a GTX 45R. Lots of great options.