PRIMUS
r
1000 Integrated Avionics System
A28--1146--112--00
System Description
2-8
TRAFFIC ALERT AND COLLISION AVOIDANCE
SYSTEM (TCAS)
This TCAS II system is described in Honeywell Pub. No. 28--1146--070,
and includes the following elements:
D
Computer
D
Antenna.
TCAS is designed to act as a backup to the ATC and the ”see and avoid”
concepts. TCAS continuously surveys the airspace around the aircraft
seeking ATC transponder replies from other aircraft in the vicinity.
Flightpaths of these aircraft are predicted based on their tracks. When
TCAS is activated through the radio management unit and selected for
display on the MFD, nearby traffic is displayed. When traffic poses a
collision threat, the PFD displays a climb or descent vertical speed
command.
PRIMUS
â
880 WEATHER RADAR SYSTEM (OPTION)
The PRIMUS
â
880 Weather Radar System, which is fully described in
Honeywell Pub. No. A28--1146--102, includes the following components:
D
Weather Radar Receiver Transmitter Antenna
D
Weather Radar Controller.
The PRIMUS
â
880 Weather Radar System is an X--band radar
designed for weather detection and analysis. The PFD and MFD show
storm intensity levels in bright colors contrasted against a deep black
background. Areas of heaviest rainfall appear in magenta, significant
rainfall is in red, rainfall of medium intensity appears in yellow, and areas
of weakest rainfall appear in green. After proper evaluation, the pilot can
chart a course around these storm areas. The radar can also be used
for ground mapping. In the map mode, prominent landmarks are
displayed that help the pilot identify coastline, hilly or mountainous
regions, cities, or even large structures. In ground mapping mode,
video levels of increasing reflectivity are displayed as black, cyan,
yellow, and magenta. The weather radar system has a turbulence
(TURB) detection mode and an autotilt function.