PRIMUSr 1000 Integrated Avionics System
A28--1146--112--00
B--1
PRIMUS
â
660 Weather Radar System
Appendix B
PRIMUS
â
660 Weather Radar
System
INTRODUCTION
The PRIMUS
R
660 Weather Radar System is a lightweight, X--band
digital radar that is designed for weather detection and ground
mapping.
The purpose of the system is to detect storms along the flightpath and
givethepilot a visualcolorindication of rainfall intensityandturbulence
content. After proper evaluation, the pilot can chart a course to avoid
storm areas.
This appendix is an abbreviated operational description of the
PRIMUS
R
660 Weather Radar System that is installed in the Embraer
145.ForcompleteoperatinginstructionsonthePRIMUS
R
660Weather
Radar System, refer to Honeywell Pub. No. A28--1146--111.
WARNING
THE SYSTEM PERFORMS ONLY THE FUNCTIONS OF WEATHER
DETECTION OR GROUND MAPPING. IT IS NOT INTENDED THAT
THIS SYSTEM EITHER BE USED OR RELIED UPON FOR PROX-
IMITY WARNING OR ANTICOLLISION PROTECTION.
DESCRIPTION
The system consists of a receiver transmitter antenna (RTA) and a
single controller (dual controllers are optional). Radar information is
normally displayed on the multifunction display (MFD) in the MAP
mode.
In the weather detection mode, storm intensity levels are displayed in
four bright colors, contrasted against a deep black background. Areas
of very heavy rainfall are displayed in magenta, heavy rainfall in red,
lesssevere rainfall inyellow, moderate rainfall in green, and little or no
rainfall in black (background). Areas of detected turbulence are
displayed in soft white.
Rangemarksandidentifyingnumerics, displayedin contrastingcolors,
are used to evaluate the location of storm cells relative to the aircraft.
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