Garmin G500, Руководство пилота

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190-01717-10 Rev. H Pilot’s Guide 5-53
Weather Awareness
5.31.3 Tilt
Use antenna tilt to locate the top and bottom of storm cells and to increase intensity
of ground target returns. One degree of tilt equals 100 feet of altitude per nautical
mile. In areas of multiple heavy cells, use the vertical scan feature along with antenna
tilt to examine the cells. Avoid shadowed areas behind targets.
When flying at altitudes between 2,000 and 30,000 ft AGL with the typical tilt setup,
avoid target returns at 5 nm. These may be either weather or ground returns that are
2,000 ft or less below the aircraft. Raise the antenna tilt 4º to separate ground
returns from weather returns in flat terrain. Return the antenna to the previous
setting after a few sweeps of the radar. Set the display range to 60 nm for aircraft
flying at 15,000 ft or lower. Monitor ground returns for possible threats.
If flying above 29,000 ft with the typical tilt setup, be cautious of targets 30 nm or
closer. This may indicate a thunderstorm that the aircraft cannot fly over safely.
A typical tilt setup adjusts the bottom of the radar beam to 4º below
parallel with the ground. To adjust the antenna tilt for this typical
setup:
1. Fly the aircraft level.
2. Adjust antenna tilt so ground returns display at a distance equal
to the aircraft’s current altitude (AGL) divided by 1,000.