TCAS791
System Description
Pilot’s Guide 1-1
Chapter 1
System Description
General Description
The
BFGoodrich Avionics Systems, Inc.
TCAS791 is an airborne Traffic alert
and Collision Avoidance System (TCAS I). It monitors the airspace around
your aircraft and advises the flight crew where to look for nearby transponder-
equipped aircraft that may pose a collision threat. The TCAS791 is intended
for use by regional airlines and corporate and general aviation aircraft.
shows the major components of the TCAS791.
The TCAS791 displays traffic information on the CD605 Control Display
Unit (CDU) or on a compatible EFIS or IVSI/TCAS display and generates
aural announcements on the cockpit sound system. Traffic information on the
display consists of color-coded symbols and text. The type of information
displayed depends on the type of intruder aircraft, but generally includes the
relative range, bearing, and altitude of intruder aircraft as well as its vertical
speed direction.
TCAS791 Pilot’s Guide
Major Components
The TCAS791 consists of four major components as described below.
Directional Antenna
The directional antenna transmits omnidirectional transponder interroga-
tions and is used as a directional antenna for receiving transponder replies.
L-Band Omnidirectional Antenna
The L-band omnidirectional antenna receives transponder replies.
Figure 1-1. TCAS791 Major Components
CD605
Directional Antenna
TRC
L-Band
Omnidirectional
Antenna
