As a pilot climbing into an ADS-B Out-equipped airplane for the first time, what do you have to do differently in order to transmit the data required by the FAA's January 1,2020, mandate for ADS-B Out in airspace where a transponder is required today? Nothing, really. Transmission of ADS-B Out information in a properly equipped aircraft essentially should be automatic. The FAA's rules for Automatic Dependent Surveillance-Broadcast Out require a single point of entry for the transponder code. For 1090ES, it's easy-a Mode S transponder into which you've already entered any assigned squawk code (or the 1200 code for VFR) also broadcasts the ADS-B data. For 978UAT the process may differ based on the hardware manufacturer, but the outcome will be the same. Let's see how some 978UAT manufacturers handle this.
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