Avionics FAQs

Southeast Aerospace will be closed December 24^th - January 2^nd for the Holidays.
Regular business hours will resume on Monday, January 5^th. AOG Services are available.

Avionics FAQ

Click here to submit a question

Can I upgrade my GNS400/500 series GPS/Nav/Comm to have HTAWS enablement?

No, you cannot directly upgrade a GNS400/500 to HTAWS. You must first upgrade the unit to WAAS before adding HTAWS capability.

The total (approx.) cost to upgrade a GNS400/500 series unit to have HTAWS (WAAS first, then HTAWS) is $15,000 List.