TILT Control
Rotate clockwise – radar antenna tilts up to selected degrees from horizon.
Flight Management, Navigation -Controls and Indicators
Rotate counterclockwise – radar antenna tilts down to selected degrees from horizon.
FORWARD ELECTRONIC PANEL
Weather Radar Mode Switches
Push – selects mode. Left mode switches control the Captain’s radar display, right mode switches control the First Officer’s radar display.
.
TFR (transfer) – transfers other map display selections to related map
.
WX/T (turbulence) – shows weather radar returns and turbulence.
Turbulence display is available on the EHSI if the selected map range is
50 nautical miles or less
Note: Turbulence detection requires presence of detectable precipitation. Clear air turbulence cannot be detected by radar.
.
WX – shows weather radar returns at selected gain level
.
MAP – shows ground returns at selected gain level
.
IDNT – suppresses ground return in WX and WX/T modes
Note: Continuous operation is not recommended because weather return intensity may be reduced.
.
TEST – shows test pattern on map display with WXR selected (except in
PLAN mode) and tests transmitter (transmits only up to one second).
Gain Uncalibrated (GAIN UCAL) Lights
Illuminated – related gain control is in an uncalibrated position.
TILT Control
Rotate clockwise – radar antenna tilts up to selected degrees from horizon.
Rotate counterclockwise – radar antenna tilts down to selected degrees from horizon.
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11.10.30 June 7, 2002
Flight Management, Navigation -Controls and Indicators 737 Operations Manual
GAIN Control
Rotate – sets gain in WX, WX/T and MAP modes.
Mode Selector Switch
TEST – displays maintenance test pattern.
WX – activates display of detected precipitation.
WX/TURB – activates display of detected turbulence (within 40 nm) along with
display of detected precipitation. Note: Turbulence detection requires presence of detectable precipitation. Clear air turbulence cannot be detected by radar. MAP – activates display of detected ground returns.
GAIN Control
Rotate – manually sets receiver sensitivity to enhance ground mapping in MAP mode only.
System automatically sets gain in other modes.
TILT Control
Rotate clockwise – radar antenna tilts up to selected degrees above horizon.
Rotate counterclockwise – radar antenna tilts down to selected degrees below horizon.
Flight Management, Navigation -Controls and Indicators 737 Operations Manual
As installed
FORWARD ELECTRONIC PANEL
Antenna Tilt Control
Rotate clockwise – radar antenna tilts up to selected degrees above horizon. Rotate counterclockwise – radar antenna tilts down to selected degrees below horizon.
Mode Switch
WX/TURB – activates display of detected turbulence (within 40 nm) along with display of detected precipitation. Note: Turbulence detection requires presence of detectable precipitation. Clear air turbulence cannot be detected by radar. WX – activates display of detected precipitation. MAP – activates display of detected ground returns.
GAIN Control
IN–AUTO – presets an optimum receiver sensitivity for best weather radar
display.
OUT–VAR – manually sets receiver gain.
Radar System (SYS) Switch
Selects transmitter/receiver system for operation when radar is on.
Mode Selector
TEST – displays maintenance test pattern.
WX – displays selected radar mode switch returns.
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Flight Management, Navigation -Controls and Indicators 737 Operations Manual
Radar Control (CONTROLS) Switch
L – displays weather radar returns to both pilots based on left weather radar
control settings.
BOTH – allows each pilot to update the respective weather radar displays based
on related control settings.
R – displays weather radar returns to both pilots based on right weather radar
control settings.
Flight Management, Navigation -Controls and Indicators 737 Operations Manual
Intentionally
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737 Operations Manual
Introduction
Navigation systems include the flight management system (FMS); inertial reference system (IRS); radio navigation systems (ADF, DME, ILS, marker beacons, and VOR); transponder; and weather radar.
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