Yes, with a supported receiver, ForeFlight can display FLARM traffic on the map. FLARM (flight-alarm) operates via air-to-air transmissions within 10 km and displays basic information about a nearby aircraft's heading, speed, and altitude.
Aircraft equipped with FLARM can receive this information and FLARM calculates collision risk based on relative position. Pilots are alerted of an imminent collision with the relative position of the other aircraft. FLARM data can be accessed with the Sentry Plus, uAvionix SkyEcho2, a device using the GDL90 protocol, or by PowerFLARM.
ForeFlight Mobile version 14.5 and later supports displaying FLARM traffic from the Sentry Plus. You must purchase a FLARM decoding license to display FLARM traffic when connected to a Sentry Plus. For more information, visit www.flywithsentry.com.
uAvionix Sky Echo2
ForeFlight Mobile version 11.5 and later supports displaying FLARM traffic (Europe only) from the uAvionix SkyEcho2.
SkyEcho includes FLARM and ADS-B receivers to receive position reports from other equipped aircraft and display them in ForeFlight. You must purchase a FLARM decoding license to display FLARM traffic when connected to a SkyEcho2.
FLARM via NMEA or GDL90
Beginning with ForeFlight Mobile version 11.7, ForeFlight Mobile can display FLARM traffic information delivered via GDL90 protocols (Europe only) or the FLARM NMEA. Of the messages available in the FLARM NMEA specification, we support PFLAU and PFLAA messages for FLARM traffic, and GPRMC, GPGGA, and GPGSA for GPS. An adapter is required to convert NMEA data into a format that can be received by the iPad.
ForeFlight supports PowerFLARM via the air-avionics WiFi module (air-connect) if hosted at the IP address 192.168.1.1 and using TCP Port 2000.