Honeywell IntuVue RDR-7000 Pilot's Manual page 52


If a squall line or system of cells must be penetrated, plan a path
through the weather in a region of the least indicated hazard with
the lowest reflectivity, generally staying upwind of the most severe
hazards. In areas where the REACT field is shown, expect the
possibility of additional weather that may have to be avoided.

When REACT fields are shown, the geometry between the aircraft
and the attenuating weather may change as the flight progresses.
This may allow weather that was in the REACT area to later be
outside of the REACT field, and the radar will then more clearly
display weather in that
area.

A Blind Alley or Box
Canyon situation can be
very dangerous. When
viewing the short ranges,
periodically switch to
longer-range displays to
observe distant
conditions. In the example
shown to the right, the
short-range returns show
an obvious corridor
between two areas of
heavy rainfall but the long-range setting shows a larger area of
heavy rainfall.

Thunderstorms build and dissipate rapidly. Therefore, you
SHOULD NOT attempt to pre-plan a flight plan course between
closely spaced echoes, or under or over convective cells. Avoid
individual storms in flight either by visual sighting or by use of
airborne radar.

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 in
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,
Principles of Weather Radar Use
50
IntuVueRDR-7000 Weather Radar Pilot's Guide
D201911000094
Rev 0, Feb 2020