Garmin G1000 Quest Kodiak User Manual download pdf (Page 329)

190-00590-00 Rev. C

Garmin G1000 Pilot’s Guide for the Quest Kodiak 100

E-1

APPENDIX E

GENERAL TIS INFORMATION

INTRODUCTION

NOTE

: Aircraft without an operating transponder are invisible to TIS.

The Trafﬁc Information Service (TIS) provides trafﬁc advisory information to non-TAS/TCAS-equipped

aircraft. TIS is a ground-based service providing the relative locations of all ATCRBS Mode-A and Mode-C

transponder equipped aircraft within a speciﬁed service volume. The TIS ground sensor uses real-time track

reports to generate trafﬁc notiﬁcation. The G1000 System displays TIS trafﬁc information on the Trafﬁc Map

Page of the MFD. TIS information may also be displayed for overlay on the MFD Navigation Map Page, as

well as on the PFD Inset Map. Surveillance data includes all transponder-equipped aircraft within the coverage

volume. The G1000 System displays up to eight trafﬁc targets within a 7.5 nm radius, from 3,000 feet below,

to 3,500 feet above the requesting aircraft.

TIS VS. TAS/TCAS

The main difference between the Trafﬁc Information System (TIS) and Trafﬁc Advisory (TAS) or Trafﬁc

Collision Avoidance Systems (TCAS) is the source of surveillance data. TAS/TCAS uses an airborne interrogator

with a half-second update rate, while TIS utilizes the terminal Mode-S ground interrogator and accompanying

data link to provide a ﬁve-second update rate. TIS and TAS/TCAS have similar ranges.

TIS LIMITATIONS

NOTE

: TIS is not intended to be used as a collision avoidance system and does not relieve the pilot of the

responsibility to “see and avoid” other aircraft. TIS shall not be used for avoidance maneuvers during

instrument meteorological conditions (IMC) or when there is no visual contact with the intruder aircraft.

NOTE: Refer to the TIS Limitations section of the Aeronautical Information Manual (AIM) for a more

comprehensive explanation.

TIS relies on surveillance of the Mode-S radar system, which is a “secondary surveillance” radar system

similar to that used by ATCRBS. Many limitations are inherent in secondary radar surveillance. Information

provided by TIS is neither better nor more accurate than the information used by ATC. TIS is intended only

to assist in visual acquisition of other aircraft in visual meteorological conditions (VMC). While TIS is a useful

aid for visual trafﬁc avoidance, system limitations must be considered to ensure proper use. No recommended

avoidance maneuvers are given, nor authorized, as a direct result of a TIS intruder display or TIS advisory.

• TIS operation may be intermittent during turns or other maneuvering.

• TIS is dependent on two-way, line-of-sight communications between the aircraft and the Mode-S radar

antenna. Whenever the structure of the aircraft comes between the transponder antenna and the ground-

based radar antenna, the signal may be temporarily interrupted.

• Other limitations and anomalies associated with TIS are described in the AIM.

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Garmin G1000 Quest Kodiak User Manual Page 329