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PRIMUS
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880
Digital
W
eather
Radar
System
A28-1146-102-00
Radar Facts
5-23
10
5
15
20
AD-17722-R1@
GMAP
Ground Return Indicating Misalignment (Upper Left)
Figure 5-21
ROLL STABILIZATION CHECK
Once proper operation is established in level flight, verify stabilization
in a turn using the procedure in table 5-6.
Step Procedure
1 Place the aircraft in 20° roll to the right.
2 Note the radar display. It should contain appreciably no
more returns than found during level flight. Figure 5-22
indicates that roll stabilization is inoperative.
3 If returns display on the right side of radar indicator;
the radar system is understabilizing.
4 Targets on the left side of the radar display indicate the
system is Overstabilizing. Refer to table 5-9 for roll
gain adjustment.
NOTE: Proper radar operation in turns depends on the accuracy
and stability of the installed attitude source.
Stabilization in Turns Check Procedure
Table 5-6