ADS-B, ARE YOU ‘IN’ OR ‘OUT’?

A review of the surveillance technology landscape

FRANK AYERS

January 1, 2020, was a red-letter day in the transition to automatic dependent surveillance-broadcast (ADS-B). ADS-B Out was required in Class A, B (including the Mode C veil), and C airspace in the United States, as well as generally above 10,000 feet. However, unless general aviation pilots decided to go a step further and equip their aircraft for ADS-B In, their flight deck situational awareness was little improved. My epiphany on this subject of ADS-B occurred a couple of years earlier. I had flown our university fleet equipped with ADS-B In since 2003, but my pocketbook dictated the lower-cost Out option for our personal ride. Then, my attitude changed. Climbing east out of Montgomery-Gibbs Executive Airport (KMYF) in downtown San Diego, I switched from tower frequency to approach control and…

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Plane & Pilot (Digital) - 1 Issue, January/February 2024

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