SPZ--8000 Digital Integrated Flight Control System
A28--1146--055
REV 2
C--5
PRIMUS
R
870 Weather Radar
4 TGT (Target) Button
Pushing the TGT button toggles the radar target alert feature on and off.
Target alert is selectable in all but the 300--mile range. In target alert
mode, the system monitors beyond the selected range and 7.5 on
each side of the aircraft heading. If a return with target alert
characteristics is detected in the monitored area, the target alert
annunciator changes from the armed condition (TGT) to the warning
condition (TGT). (See the target alert characteristics in Table C--1 for
a target description.) The TGT annunciator advises the pilot of
potentially hazardous targets directly in front of the aircraft that are
outside the selected range. When an amber warning is received, the
pilot should select longer ranges to view the questionable target. (Note
that target alert is inactive within the selected range.)
Selecting target alert forces the system to preset gain. Target alert can
be selected only in the weather or flight plan modes.
NOTE: In order to activate the target alert warning, the target must
have the depth and range characteristics described in Table
C--1.
Selected
Range (NM)
Target
Depth (NM)
Target
Range (NM)
5 2 5--55
10 2 10--60
25 4 25--75
50 4 50--100
100 6 100--150
200 6 200--250
300 Inactive -- --
FP (Flight Plan) 2 5--55
Target Alert Characteristics
Table C- -1
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