Boeing ForeFlight Sentry - ADS-B Ownship Identification

ADS-B TRAFFIC
ADS-B Ownship
ADS-B Ownship is the process of identifying a traffic target as being your aircraft. There are a
few benefits for determining ADS-B Ownship.
•
Your aircraft’s traffic target is suppressed from
the ForeFlight map when ownship is detected.
•
Information from your ADS-B Out transmission
can be used in ForeFlight Track Logs (e.g. Call
Sign).
•
Pressure altitude from your ADS-B Out
transmission is used for altitude comparison.
When ownship is not detected, ForeFlight
compares relative altitude using your GPS
altitude and the pressure altitude of nearby
targets.
•
Your aircraft’s ADS-B Out data can be reviewed in
More > Devices > Sentry > Ownship.
ForeFlight determines Ownship by evaluating the location,
speed, and heading data of your ADS-B broadcast and
comparing it to Sentry GPS data.
If your aircraft’s ADS-B Out position data and Sentry GPS
data match closely, ForeFlight recognizes the traffic
information as coming from your aircraft and assigns
ownship status. Once the ownship status for an aircraft has
been established, the traffic target is hidden from the map
and ForeFlight determines relative altitude by comparing the
pressure altitude broadcast of nearby aircraft to the pressure
altitude broadcast from your ADS-B Out transmission.
Tap More > Devices > Sentry > Ownship to see if ownship
status is assigned for your aircraft. The Ownship view
depicts information from your aircraft’s transponder: call sign,
squawk, ICAO address, source, location data, and more. If your aircraft is not ADS-B Out
equipped, or if ADS-B out is not detected, Ownship displays Not Detected.
Sentry Pilot’s Guide 39
NOTE: Sentry must be able to directly receive your aircraft’s ADS-B Out signal to assign
ownship status accurately. In larger aircraft, it may not be possible for Sentry to detect your
ADS-B Out signal due to interference from the airframe.
ADS-B Ownship