Garmin Unveils New ForeFlight-Compatible ADS-B Transponders

ForeFlight connectivity with GTX345

Garmin announced today the release of two new options to help you meet the 2020 ADS-B Out mandate. The GTX 345 and GTX 335 all-in-one transponders are compatible with ForeFlight and, depending on the model you choose, wirelessly deliver (via Bluetooth) FIS-B weather, ADS-B traffic, GPS position, and attitude information to your mobile device.

We are thrilled to continue our partnership with Garmin and to offer ForeFlight customers flying with Garmin hardware the opportunity to unlock more value from their avionics investment and gain access to connectivity options that enhance the ForeFlight experience.

Visit foreflight.com/connect to learn about all of the ForeFlight connectivity partnerships.

ForeFlight Announces Connectivity with Garmin Avionics

We are excited to announce connectivity between ForeFlight Mobile and Garmin avionics. When connected to Garmin Flight Stream, you can now wirelessly receive ADS-B weather and traffic, precise GPS position data, and dynamic pitch and bank information on your iPad or iPhone.

ForeFlight Mobile and Garmin avionics

ForeFlight Mobile connects to compatible Garmin avionics via the Flight Stream 210/110, Garmin’s Bluetooth® wireless gateway, and displays the full suite of ADS-B weather and traffic information received from the GDL 88/84. The Flight Stream 210, with its internal attitude sensor, powers ForeFlight’s Synthetic Vision and adds a backup attitude capability with dynamic pitch and bank information.

WAAS GPS position information from GTN™ 650/750, GNS™ 430W/530W navigators, or GDL 88 with an internal WAAS receiver can also be used to power features like ForeFlight Mobile’s moving map and geo-referenced approach plates and taxi diagrams to enhance situational awareness in the air and on the ground.

Additionally, flight plan transfer capability is currently in development and will be available in a future app update.

Support for Garmin Flight Stream connectivity is available with ForeFlight Mobile 7.2, now available for download on the App Store. For more information, visit foreflight.com/connect.

[Updated] Pings, Pucks, and Traffic on Stratus

December 27, 2013 NOTE: We have a short video (linked here) that shows how to connect ForeFlight Mobile to Stratus, enable the traffic layer, and interact with a traffic target. You can find out more about the ForeFlight Mobile and Stratus integration by clicking here.

April 29, 2013 NOTE: ForeFlight Mobile was updated to show ADS-B traffic data (as of v5.1).  ADS-B Out adoption has grown over the last year, but all of the cautions from this post still apply.  Read on to learn about how the ADS-B traffic system works, and why having ADS-B Out installed in your airplane is critical to getting useful traffic data.


Original post from April 1, 2012:

Many pilots today – in our booth at Sun ‘n Fun and on Facebook and Twitter – have asked about whether or not the Stratus and ForeFlight Mobile support traffic.

Firstly, Stratus does receive the traffic stream. However, ForeFlight Mobile does not to display it (edit: as of version 5.1 it DOES show traffic, see notes above), and here’s why:

You’re flying along and an aircraft passes by. No alert. Another aircraft passes by, no alert. Then another, and another, and another. No alerts. Occasionally, you get an alert. But for the most part, day in and day out, traffic passes by, no alerts. In pretty short order, you lose confidence in your portable ADS-B “traffic” system.

Without certified ADS-B “Out” equipment in your airplane, the narrative above is likely to be your experience if your aircraft is not ADS-B “Out” equipped. ADS-B ground stations only send out traffic information when a properly equipped aircraft “pings” the station. To ping, an aircraft needs certified ADS-B avionics installed that are permitted to ping, receive air-to-air traffic broadcasts, and send traffic information into the national airspace system computers. This ping ability is essentially enabled by what is referred to as “ADS-B Out”.  Stratus is ADS-B In only, and does not provide ADS-B Out capability.

In response to ADS-B Out pings, an ADS-B ground station sends back traffic data in a hockey puck-shaped area centered around the transmitting aircraft. Ground stations aren’t always broadcasting traffic data – they transmit that when an ADS-B Out signal is received.

The “puck” sent is a customized set of traffic data – targets consisting of any aircraft transmitting ADS-B Out, Mode A/S/C, or targets being picked up by radar – observed within a 15nm radius of the ADS-B Out equipped aircraft’s current position (plus or minus 3,500′ in relative altitude).

If your aircraft is not equipped to “ping” you would only receive traffic data centered around other ADS-B Out equipped aircraft that happened to be nearby.  If you are on the fringe of that other aircraft’s puck, you’d be more than half blind.  Since there are few aircraft currently equipped with ADS-B Out, this “blindness” would be a very common situation.

Traffic on a portable ADS-B weather receiver creates a potentially dangerous false sense of security for pilots flying without ADS-B Out. They would not be seeing the whole traffic picture.

As we get closer to 2020, ADS-B out adoption will grow. However, until ADS-B Out adoption is more widespread, ForeFlight Mobile will not be showing traffic data from the system to avoid this situation.