User's Manual

ManualsBrandsGarmin International ManualsElectronicsTRAFFIC ADVISORY SYSTEM (TAS) PROCESSOR

GNS 430(A) Pilot’s Guide and Reference

190-00140-00 Rev. P

12-11

SECTION 12

ADDITIONAL FEATURES

12.2 TRAFFIC ADVISORY SYSTEMS (TAS)

Introduction

All information in this section pertains to the display

and control of the Garmin GNS 430/GTS 800 interface.

NOTE: This section assumes the user has

experience operating the GNS 430 and the

GTS 800.

NOTE: References to the GTS 800 throughout

this document refer equally to the GTS 820 and

GTS 850 unless otherwise noted.

System Description

The GNS 430 provides an optional display interface for

the GTS 800 Trafc Advisory System (TAS). The GTS 800

monitors the airspace surrounding an aircraft, and advises

the ight crew where to look for transponder-equipped

aircraft that may pose a collision threat.

Symbol Trafﬁc Type Description

Trafﬁc

Advisory (TA)

A TA (Trafﬁc Advisory) is generated when the GTS 800 predicts that an intruder aircraft may

pose a collision threat. A solid yellow circle represents an intruder aircraft that is on a course

that projects to intercept (deﬁned by a 0.5 nm horizontal radius and a relative altitude of

± 500 ft) the pilot’s current course within 34 seconds. A TA consists of the trafﬁc symbol and

an aural alert (e.g., “trafﬁc, 12 o’clock, high, 3 miles”).

Out-of-

Range Trafﬁc

Advisory

This solid yellow half circle appears (on the outer range ring) under the same conditions and

has the same urgency as a TA. Its appearance differs from the TA only to signify that the

intruder is outside of the current range of the Trafﬁc Page.

Proximity

Advisory (PA)

Proximity Advisories (PA) are displayed as solid white diamonds. PAs are deﬁned as trafﬁc

within the 6.0-nm range, within ±1200 ft. of altitude separation, and are not a trafﬁc advisory

(TA).

Other Trafﬁc

Symbol

This symbol (hollow white diamond) represents trafﬁc detected within the selected display

range that does not meet the criteria for a TA or a PA and does not pose an immediate collision

threat.

Table 12-4 TAS Symbology

The GTS 800 is an active trafc advisory system that

operates as an aircraft-to-aircraft interrogation device.

When the GTS 800 receives replies to its interrrogations, it

computes the responding aircraft’s range, bearing, relative

altitude, and closure rate; it then plots the trafﬁc location

and predicts collision threats.

Trafﬁc Symbology

Trafc information from the GTS 800 is displayed on

the GNS 430 unit using TAS symbology (Table 12-4) on

a dedicated Trafc page, and on the moving Map Page.

The displayed trafﬁc information generally includes the

relative range, bearing, and altitude of intruder aircraft.

The GTS 800 also generates aural announcements heard

on the cockpit audio system.

Summary of content (7 pages)

PAGE 1
SECTION 12 ADDITIONAL FEATURES 12.2 Traffic Advisory Systems (TAS) Introduction All information in this section pertains to the display and control of the Garmin GNS 430/GTS 800 interface. NOTE: This section assumes the user has experience operating the GNS 430 and the GTS 800. NOTE: References to the GTS 800 throughout this document refer equally to the GTS 820 and GTS 850 unless otherwise noted.
PAGE 2
SECTION 12 ADDITIONAL FEATURES Altitude deviation (Figure 12-20) from own aircraft altitude is displayed (in hundreds of feet) for each target symbol. If traffic is above own aircraft altitude the deviation is shown above the target next to a ‘+’ symbol. If traffic is below own aircraft altitude the deviation is shown below the target next to a ‘-’ symbol.
PAGE 3
SECTION 12 ADDITIONAL FEATURES Tracking intruder aircraft 1) Press the small right knob to activate the cursor and highlight ‘STBY’. 2) Turn the small right knob to select ‘OPER’. 3) Press the ENT Key to confirm operating mode and begin tracking intruder aircraft. NOTE: The FAILED message is displayed when the system detects an error that prohibits further traffic display operation. User-initiated Test In addition to the power-up test, the GTS 800 performs self-tests during normal operation.
PAGE 4
SECTION 12 ADDITIONAL FEATURES Traffic Page Traffic can be displayed both on the Map Page (only if heading is available) and on the Traffic Page (Figure 12-22). See the Garmin 400/500 Series Installation Manual available at authorized Garmin service centers for details.
PAGE 5
SECTION 12 ADDITIONAL FEATURES The selected altitude display mode (Figure 12-24) is displayed in the upper left-hand corner of the Traffic Page. The GTS 800 continues to track up to 30 intruder aircraft within its maximum surveillance range, regardless of the altitude display mode selected. Changing the Altitude Display Mode: 1) 2) From the Traffic Page, press the small right knob to activate the cursor and highlight the current mode (Figure 12-24). Turn the small right knob to cycle through the options.
PAGE 6
SECTION 12 ADDITIONAL FEATURES Configuring Traffic Data on the Map Page Traffic is only displayed on the Map Page if aircraft heading data is available. When heading is not available, Traffic Advisories are displayed as non-bearing banners on the Map Page. See the Garmin 400/500 Series Installation Manual available at authorized Garmin service centers for details.
PAGE 7
SECTION 12 ADDITIONAL FEATURES Highlighting Traffic Data Using Map Panning Another map page function is panning, which allows changing the map beyond its current limits without adjusting the map scale. Select the panning function by pressing the small right knob, a target pointer flashes on the map display (Figure 12-29). Also a window appears at the top of the map display showing the latitude/longitude position of the pointer, and the bearing and distance to the pointer from the present position.