Weather Radar Panel
YA613, YA626, YC411, YC413
Mode Selector Switch
Rotate – selects mode.
TEST –
.
tests weather radar system operation
.
shows test pattern and any fault messages on navigation display MAP,
center MAP, VOR, and APP modes, with WXR selected.
Note: If the airplane is on the ground and the thrust levers are not advanced for takeoff, WXR tests the predictive windshear system (PWS) indications. These include PWS FAIL, PWS caution, and PWS warning. Deactivating WXR on the EFIS control panel will not discontinue the test and can result in automatic WXR activation on both pilot displays. The PWS test lasts approximately 15 seconds.
WX (weather) – shows weather radar returns at selected gain level.
WX/TURB (turbulence) –
.
shows weather radar returns
.
shows turbulence within 40 miles.
Note: Turbulence detection requires presence of detectable precipitation. Clear air turbulence cannot be detected by radar.
MAP – shows ground returns.
GAIN Control
Rotate –
.
sets receiver sensitivity to enhance ground mapping in MAP mode only
.
system automatically sets gain in other modes.
Copyright . The Boeing Company. See title page for details.
Flight Management, Navigation -Controls and Indicators
AUTO (automatic) – gain control is automatic.
MAX (maximum) – reduces amount of ground return.
TILT Control
Rotate clockwise– radar antenna tilts up to selected degrees above horizon.
Rotate counterclockwise– radar antenna tilts down to selected degrees below
horizon.
YA721 - YA803
Mode Switches
Push – selects mode.
TEST –
.
tests weather radar system operation without transmitting
.
shows test pattern and any fault messages on navigation display MAP,
center MAP, VOR, and APP modes, with WXR selected.
Note: If the airplane is on the ground and the thrust levers are not advanced for takeoff, WXR tests the predictive windshear system (PWS) indications. These include PWS caution, PWS FAIL, and PWS warning. Deactivating WXR on the EFIS control panel will not discontinue the test and can result in automatic WXR activation on both pilot displays. The PWS test lasts approximately 15 seconds.
WX (weather) – shows weather radar returns at selected gain level.
WX+T (turbulence) –
.
shows weather radar returns
.
shows turbulence within 50 miles.
Note: Turbulence detection requires presence of detectable precipitation. Clear air turbulence cannot be detected by radar.
Copyright . The Boeing Company. See title page for details.
11.10.30 March 28, 2005
Flight Management, Navigation -Controls and Indicators
MAP – shows ground returns.
IDNT – suppresses ground return in WX and WX+T modes.
STAB – antenna tilt automatically adjusts to correct for airplane attitude changes.
GAIN Control
Rotate – sets receiver sensitivity in WX, WX+T, and MAP modes.
CAL (calibrated) – presets an optimum receiver sensitivity for best weather radar display.
TILT Control
Rotate clockwise – radar antenna tilts up to selected degrees above horizon.
Rotate counterclockwise – radar antenna tilts down to selected degrees below
horizon.
YA809, YK101 - YK104
GAIN Control
Rotate – sets gain in WX (VAR) or MAP modes only.
Automatically sets gain in other modes.
BELOW CAL (amber)
Actual gain is less than calculated by automatic gain control.
GCS
Activates ground clutter suppression in WX mode, normally off.
TILT Control
Rotate clockwise – radar antenna tilts up to selected degrees from horizon.
Copyright . The Boeing Company. See title page for details.
Flight Management, Navigation -Controls and Indicators
Rotate counterclockwise – radar antenna tilts down to selected degrees from horizon.
Mode Selector Switch
.
WX – shows weather radar returns at selected gain level
.
WX+T (turbulence) – shows weather radar returns and turbulence within
50 nautical miles
Note: Turbulence detection requires presence of detectable precipitation. Clear air turbulence cannot be detected by radar.
.
WX (VAR) – allows manual control of radar gain
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本文链接地址：737NG机组操作手册Flight Crew Operations Manual FCOM 3(62)
