Honeywell IntuVue RDR-7000 Pilot's Manual page 8

predictive, icons often display 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 feet,windshear and weather scans are interleaved (if
PWS is installed).The windshear detection operation is transparent
to the crew unless an alert is issued.

While on the ground, the radar will automatically be in FORCED
STANDBY mode unless the WX/PWS qualifiers are satisfied. There
is no radiation hazard to nearby personnel while in this mode.

The antenna beam is very narrow at close ranges and widens
significantly with range. Therefore, the resolution and accuracy of
weather reflectivity is better at ranges closer to the aircraft.

As with previous radars, low-lying stratus weather may be difficult
to discriminate from ground returns. The radar may not show this
sort of weather on the display.

The use of the internal topographical information results in a
significant reduction in ground returns. However, the radar is not
aware of man-made reflectors such as buildings at airports and
cities. Therefore, it is possible that not all ground clutter will be
eliminated.

There are several potential sources of false weather indications,
including RF interference sources external to the aircraft,
anomalous signal propagation due to atmospheric conditions,
strong returns from urban areas and mountainous regions, and
others. Before making operational decisions based on small
isolated indications on the weather display, the validity of these
indications should be verified via PIREPS, ground-based weather
sources and/or ATC communications.

Reference the following Federal Aviation Administration (FAA)
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.
Introduction
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IntuVueRDR-7000 Weather Radar Pilot's Guide
D201911000094
Rev 0, Feb 2020