Garmin GNC 420 - Manual (Page 191)

GNC 420(A) Pilot’s Guide and Reference 11-1
SECTION 11
ADDITIONAL FEATURES
190-00140-20 Rev. K
SECTION 11: ADDITIONAL
FEATURES
CaUTiON: The Weather Data Link and TiS
information contained in this section is not
intended to replace the documentation that is
supplied with the GDL 49, the GDL 69(a) Data
Link, and the GTX 330 Transponder.
CaUTiON: TiS is not intended to be used as a
collision avoidance system and does not relieve
pilot responsibility to ‘see and avoid’ other
aircraft. TiS should not be used for avoidance
maneuvers during instrument Meteorological
Conditions (iMC) or other times when there is
no visual contact with the intruder aircraft. TiS
is intended only to assist in visual acquisition
of other aircraft in Visual Meteorological
Conditions (VMC). avoidance maneuvers are
not recommended, nor authorized, as a direct
result of a TiS intruder display or TiS alert.
NOTe: Garmin is not responsible for Mode S
geographical coverage. Operation of the ground
stations is the responsibility of the Faa. refer
to the aeronautical information Manual for a
Terminal Mode S radar Site Map covering the
U.S.
NOTe: This Section assumes the user has
experience operating the GNC 420 unit and the
Garmin GTX 330 Transponder.
NOTe: TiS and Weather Data Link displays
are available only when GNC 420 units are
configured with the GTX 330 Mode S Transponder
and a GDL 49 or GDL 69(a) Data Link Satellite
receiver.
NOTe: Proximity advisories and Other Traffic
symbols normally displayed in white may be
displayed in cyan if configured for alternate
traffic color (see the 400 series installation
manual).
11.1 TRAFFIC INFORMATION SERVICE (TIS)
This section is written for:
• Garmin GNC 420 Main System Software Version
5.01 and later
• GTX 330/330D Main Software Version 4.01 and
later
Some differences in operation may be observed when
comparing the information in this manual to earlier or
later software versions.
NOTe: This section is written exclusively for
GNC 420 units that are configured with the GTX
330 Mode S Transponder. refer to the 400/500
Series Display interfaces Pilot’s Guide addendum
(190-00140-10) when interfacing with non-
Garmin products.
TIS Operation
Traffic Information Service (TIS) provides a graphic
display of traffic advisory information in the cockpit
for non-TCAS equipped aircraft. TIS is a ground-based
service providing relative location of aircraft tracked by
ATC radar within a specified service volume. The TIS
ground sensor uses real-time track reports to generate
traffic notification. TIS Traffic display is available to aircraft
equipped with a Mode S Data Link, such as the Garmin
GTX 330 Transponder. TIS traffic information from a
GTX 330 Transponder can then be displayed on a GNC
420 unit. Surveillance data includes aircraft tracked by
ATC radar within the coverage volume. Aircraft without
an operating transponder are invisible to TIS.