Lynx
®
NGT-9000
Pilot’s Guide 1-7
Description
Automatic Dependent Surveillance – Re-broadcast (ADS-R)
ADS-R is a ground based broadcast service that repeats ADS-B
messages from one link (1090 MHz or 978 MHz) to the other link for
aircraft with ADS-B In.
ADS-R is NOT intended to be used as a collision avoidance system
and does NOT relieve the pilot of responsibility to “see-and-avoid”
other aircraft.
No avoidance maneuvers are provided for, nor authorized, as a
direct result of a ADS-R other aircraft being displayed in the cockpit.
Avoidance maneuvers must be based on visually acquiring the
target.
The actual availability of services depends upon both the availability
of a ground station to support ADS-R source data and aircraft being
within range of the ground station.
ADS-R transmissions are updated at least every 2 seconds on the
surface, 5 seconds in the terminal area, and 10 seconds in the en-
route airspace.
Other aircraft are provided by the ground station if within a 15 nm
horizontal range and +/-5,000 ft of altitude of the receiving aircraft.
ADS-B equipped ground aircraft and vehicles are not displayed to
airborne aircraft.
An aircraft on the ground receiving ADS-R is provided both ground
aircraft and vehicles as well as airborne other aircraft within 5nm
and 2,000 ft above ground level of the airport reference point.
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The traffic display shows the relative position of ADS-B or standard
traffic using text, shapes, and colors. ADS-B also provides similar
information on ADS-B equipped ground vehicles.
The effective surveillance range is 60 nmi. The passive-mode
surveillance range is 160 nmi and maintains report messages
for a minimum of 200 1090ES ADS-B participants and 300 UAT
ADS-B participants simultaneously. To reduce display clutter a
set number of other aircraft of the highest priority other aircraft
are displayed at a time.
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