Garmin G1000 Pilot's Training Guide (-05) - Page 47

Exercise 12.3: Weather Radar

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Exercise 12.3: Weather Radar 1. Does the GWX 68 Airborne Weather Radar allow you to operate while on the ground? Yes, however, a caution will appear alerting the pilot to follow all safety precautions. WARNING: Begin transmitting only when it is safe to do so. If it is desired to transmit while the aircraft is on the ground, no personnel or objects should be within 11 feet of the antenna. 2. Describe WATCH™. Weather Attenuated Color Highlight (WATCH ™) is a tool to determine areas of possible inaccuracies in displayed intensity due to weakening of the radar energy. This weakening is known as "attenuation". The radar energy weakens as it passes through areas of intense precipitation. This has an effect on the return intensity. Accuracy of the displayed intensity of returns located in gray shaded areas are suspect. 3. Is it safe to continue a flight into a gray shaded area? It is never safe to continue flight into shaded area; weather information for shaded areas is indeterminate. 4. After adjusting the gain manually, why is it important to return the gain setting to the calibrated value? Changing the gain will cause precipitation intensity to be displayed as a color not representative of the true intensity. One must return the gain to the calibrated value for the actual intensity of precipitation. 5. How does one activate or deactivate the bearing line? 1. Press the MENU Key. 2. Turn the large FMS Knob to select "Show Bearing Line" or "Hide Bearing Line". 3. Press the ENT Key. 190-00368-05 Rev. B GIFD Pilot's Training Guide 43

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190-00368-05
Rev. B
GIFD Pilot’s Training Guide
43
Exercise 12.3: Weather Radar
1.
Does the GWX 68 Airborne Weather Radar allow you to operate while on the ground?
Yes, however, a caution will appear alerting the pilot to follow all safety precautions.
WARNING:
Begin transmitting only when it is safe to do so. If it is desired to transmit
while the aircraft is on the ground, no personnel or objects should be within 11 feet of the
antenna.
2.
Describe WATCH
.
W
eather At
tenuated C
olor H
ighlight (WATCH
) is a tool to determine areas of
possible inaccuracies in displayed intensity due to weakening of the radar energy.
This
weakening is known as “attenuation”.
The radar energy weakens as it passes through
areas of intense precipitation.
This has an effect on the return intensity.
Accuracy of the
displayed intensity of returns located in gray shaded areas are suspect.
3.
Is it safe to continue a flight into a gray shaded area?
It is never safe to continue flight into shaded area; weather information for shaded areas
is indeterminate.
4.
After adjusting the gain manually, why is it important to return the gain setting to the
calibrated value?
Changing the gain will cause precipitation intensity to be displayed as a color not
representative of the true intensity.
One must return the gain to the calibrated value for
the actual intensity of precipitation.
5.
How does one activate or deactivate the bearing line?
1.
Press the
MENU
Key.
2.
Turn the large
FMS
Knob to select “Show Bearing Line” or “Hide Bearing Line”.
3.
Press the
ENT
Key.