Garmin Adds AHRS Sensor to GDL 39 3D ADS-B Receiver
During an in-flight test of Garmin’s GDL 39 3D, the device delivered AHRS information to Garmin Pilot running on an iPad, shown here next to the attitude indicator in the airplane.
During an in-flight test of Garmin’s GDL 39 3D, the device delivered AHRS information to Garmin Pilot running on an iPad, shown here next to the attitude indicator in the airplane.

Garmin has joined the competition for AHRS-equipped portable ADS-B receivers with the new GDL 39 3D, priced at $849 or (with an optional battery) $899. Unlike other portable ADS-B receivers with built-in attitude and heading reference systems (AHRS), the GDL 39 3D works only with Garmin’s Pilot iPad and Android apps and most Garmin portable GPS receivers. When the GDL 39 3D is paired with the latest version of Garmin Pilot, users can view not only datalinked traffic and weather but also an AHRS-driven attitude indicator. The GDL 39 3D also contains a Waas-capable GPS receiver.

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