Operational Limitations And Considerations - Honeywell IntuVue RDR-4000 Pilot's Manual

IntuVue RDR-4000 Weather Radar Pilot's Guide

OPERATIONAL LIMITATIONS AND CONSIDERATIONS

The limitations of the radar system have been consolidated here
because of their importance. This section should be read thoroughly
and frequently as a reminder of weather radar limitations.
Weather detection, analysis, and avoidance are the primary functions
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of the radar system. Airborne weather systems are not intended as a
terrain or traffic collision avoidance system.
Your radar is a weather avoidance tool. It should never be used for
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weather penetration. It will help you see and plan avoidance
maneuvers around significant weather encountered during flight.
Radar detects raindrops, hail, and ice particles. It does not detect
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clouds or fog.
Radars detect the presence of precipitation. Storm-associated
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turbulence without precipitation can extend several thousand ft above
a storm and outward more than 20 nm.
Turbulence detection requires the presence of precipitation. Clear-air
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turbulence is not detected or displayed.
The weather display corresponds to the selected range while the
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turbulence display is overlaid for the first 40 nm in AUTO mode
(regardless of range selected). If the Hazard Display features are
installed, turbulence will be displayed for the first 60 nm, and will be
available in both AUTO and MAN modes.
Hail and lightning icons indicate that conditions are conducive to the
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development of hail or lightning. Since this technology is predictive,
icons often appear prior to the actual formation of the hail or lightning.
Hence, the presence of icons does not guarantee that hail or lightning
will be present. Similarly, the absence of an icon does not guarantee
that the condition will not be present.
Below 1,800 ft windshear and weather antenna scans are
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interleaved. The windshear detection operation is transparent to the
crew unless an alert is issued.
Leave the system OFF or in TEST mode until it is safe to operate the
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radar (see ON/OFF on page 5). While OFF or in TEST mode there is
no radiation hazard to nearby personnel.
Reference the following Federal Aviation Administration (FAA)
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Advisory Circulars:
AC 00-24B Thunderstorms
AC 00-6A Aviation Weather
AC 00-50A Low Level Wind Shear
AC 20-68B Recommended Radiation Safety Precautions
060-4492-000
Rev 7, February 2015
Introduction
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