WEATHER RADAR
SYSTEM
The WxR-852 radar system is installed in the
Pro Line 21 King Air C90GTi.
Weather radar controls are located on the dis-
play control panels (DCP). Weather radar dis-
play is shown on the MFD or PFD, depending
on display selections. The weather radar is op-
erated in a split mode with independent radar
scans shown on each PFD.
The following weather radar controls are lo-
cated on the display control panel:
Radar Button
The RADAR line select key controls display
of the weather radar menus on the PFD
(Fig-
ure 16-148).
Figure 16-148. PFD Radar Menu
The following modes are selected with the
MODE line select key and are displayed on
the PFD’s weather radar status field.
Standby Mode (STBY)
The STBY (standby) mode inhibits the radar
transmitter and antenna scan drive. Selecting
STBY or TEST will affect both pilot’s radar
displays. The other three modes (Wx, Wx+T,
or MAP) can be independently chosen. This
STBY mode will automatically be selected 60
seconds after weight on wheels. However,
once on the ground the radar can be turned
ON again by reselecting a desired mode.
Test Mode (TEST)
The system self-test is initiated by selecting the
TEST mode of operation. A test pattern made
up of six rainbow-like arcs show on the dis-
play(s) when the TEST mode is active (Figure
16-149).
Figure 16-149. Test Mode
Map Mode (MAP)
The MAP mode allows the weather radar to
provide the most detailed ground returns. The
signal processing and target display colors are
changed to accentuate ground features. Ground
targets show in cyan, green, yellow, and ma-
genta (Figure 16-150). This mode should not be
used for weather avoidance.
BRT
DIM
300
30.16IN
MIN 200 RA
FMS 1
DTK
301
ICT
4.1
NM
25
301
33
N
W
24
ATC1
UTC
RAT
1200
16:42
- 4
o
C
<
<
17
RADAR
RADAR
<
GAIN
NORM
STBY
WX
MAP
TEST
MODE
Collins
BRT
DIM
10
10
20
HDG
PTCH
ALTS
14
000
6
60
540
20
400
600
700
1
2
4
4
2
1
30.16IN
<
PRESET
FMS
FORMAT >
VOR1
113.85
251
W
30
24
21
ATC1
UTC
RAT
COM1
COM2
121.800
4336
125.250
14:41
15
o
C
<
140
80
60
6935
RDR
TERR
<
ET
10
ACC
-.02
TEST
T+4.0
0
FMS
RADAR ON
TCAS OFF
TFC
>
>
SYNC
CRS 229
5
V
2
V
R
V
1
110
93
93
16-83
FOR TRAINING PURPOSES ONLY
KING AIR C90GTi/C90GTx
PILOT TRAINING MANUAL
16
A
VIONICS
Содержание C90GTi
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