400/500 Series Garmin Optional Displays

Section 3: TIS Operational Procedures
Introduction
TIS warns the user with voice and visual traffic advisories whenever it predicts an intruder to be a
threat (see sidebar). The user should not start evasive maneuvers using information from the 400/500
display or on a traffic advisory only. The display and advisories are intended only for assistance in visually
locating the traffic, due to the lack in resolution and coordination ability. The flight crew should attempt
to visually acquire the intruder aircraft and maintain a safe separation in accordance with the regulatory
requirements and good operating practice. If the flight crew cannot visually acquire the aircraft, they
should contact ATC to obtain any information that may assist concerning the intruder aircraft. Based on
the above procedures, minor adjustment to the vertical flight path consistent with air traffic requirements
are not considered evasive maneuvers.
Power-Up Test
The TIS interface performs an automatic test during power-up.
• If the system passes the power-up test, the Standby Screen appears on the Traffic Page.
• If the system passes the power-up test and the aircraft is airborne (as determined by system
configuration at the time of installation, see your installer for detailed criteria information),
traffic is displayable on the Traffic Page in operating mode.
• If the system fails the power-up test, the ‘NO DATA’, ‘DATA FAIL’, or ‘FAILED’ message is
displayed. See your installer for corrective action if the ‘DATA FAIL’, or ‘FAILED’ message is
displayed. The ‘FAILED’ message indicates the GTX 330 has failed. The ‘DATA FAIL’ message
indicates data is being received from the GTX 330 but a failure was detected in the data stream.
The ‘NO DATA’ message indicates that data is not being received from the GTX 330.
NOTE: ‘NO DATA’ may be a normal mode of operation in a dual transponder installation where the
GTX 330 with TIS is not the selected transponder.
Section 3
TIS Operational Procedures
0.5 nm
Intruder Aircraft
+ 500 ft
This area within 34 seconds - 500 ft
Conditions for Traffic Advisories
The following condition causes TIS to display
a Traffic Advisory (TA) on the 400/500 Series
unit:
• The intruder aircraft approaches your aircraft
on a course that will intercept (defined by
a 0.5 nm horizontal radius and a relative
altitude of ± 500 ft) your course within 34
seconds.
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