Embraer EMB145, Operation Manual

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AIRPLANE
OPERATIONS
MANUAL
NAVIGATION AND
COMMUNICATION
REVISION 38
2-18-45
Page
13
Code
01
A
O
M-145/1
114
TILT
Tilt management is crucial to the safe operation of weather radar. If
improperly managed, weather targets can be missed or
underestimated. Proper tilt management demands that tilt be changed
continuously.
To find the best tilt angle after the airplane is airborne, adjust the TILT
antenna downward until a few ground targets are visible at the edge of
the display. The table below gives the approximate tilt settings for
minimal ground target display for different altitudes and ranges. If the
altitude changes or a different range is selected, adjust the tilt control
as required to minimize ground returns.
When flying at high altitudes, tilt downward frequently to avoid flying
above storm tops. When in low altitude or approaching for landing, tilt
management must be performed manually, with the radar beam
vertically sweeping from up to down to avoid flying above or below a
storm line.
During takeoff, the radar must be adjusted to a minimum range scale,
with a horizontal RH and LH scan and with the antenna positioned
upwards (climbing angle).