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TCAS791 Pilot’s Guide
Software Version Information
All references in this guide to standby, look up/look down, altitude display
modes (above, below, and normal), and transmitting from the ground are func-
tions of all TCAS791 systems that have software version 1.3 or higher in their
Transmitter Receiver Computer (TRC). Ignore these references if your TRC
has an earlier version of software. (The software version is identified on a tag
attached to the back of the TRC.)
The following warnings and cautions appear in this guide and are repeated
here for emphasis:
WARNING (pages 2-8 & 2-15)
The TCAS791 alone does not ensure safe flight. You must
still visually scan the airspace around your aircraft fre-
quently. The TCAS791 relies on information obtained from
transponders in nearby aircraft. The TCAS791 does not de-
tect or track aircraft which are not equipped with an oper-
ating ATCRBS transponder.
WARNING (page 2-15)
Do not attempt evasive maneuvers based solely on traffic
information shown on the TCAS791 display. Information
shown on the display is provided to the aircrew only as an
aid in visually acquiring traffic which may impose a colli-
sion threat. It is not a replacement for ATC and the See &
Avoid concept.
CAUTION (page 2-8)
Optimum TCAS791 performance is realized when intruder
aircraft are reporting their altitude (via a mode C or other
altitude reporting transponder).
Safety Summary
