BendixKing IN-862A System RDR-2100 - Manual (Page 42)

introduce a three to five degree antenna stabilization error which may
persist as long as 5 minutes after the maneuver. Precession error
results in a “lopsided” antenna scan; low on one side, high on the other.
If the picture is extremely “dirty” in the forward area-antenna looking at
terrain rather than precipitation-use a slight degree of up tilt. In the
azimuth scan area near 45° left or right, the beam tilt is close to that indi-
cated.
A rapid climb profile dictates that the tilt should not remain in the up posi-
tion for extended periods. As the aircraft altitude progressively
increases, the possibility of over scanning weather cells also increases.
The effective storm height is progressively reduced by the aircraft alti-
tude.
• Adjust radar and obtain weather picture before takeoff.
• Plan wide clearance of cells.
• Compensate antenna tilt for gyro precession.
• Evaluate weather in the immediate sphere of operation.
• Do not “over-scan” weather targets.
• During excessive aircraft maneuvers, recognize the limitations of
stabilization.
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Effective Date: 9/98 RDR 2100 Pilot's Guide: Rev 1
Antenna Stabilization
RDR 2100 PG 3/12/07 3:45 PM Page 38