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(2) Map Reference Point
(3) Crosstrack Error
Refer to DSC-31-45 ROSE NAV MODE/ARC MODE.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
INDICATIONS ON ND
A330/A340 FLEET DSC-31-45 P 12/30
FCOM 19 AUG 10
WEATHER RADAR
Applicable to:
(1) Weather Radar Picture
When the radar is operating, and when the ND is not ‐ in PLAN mode, the ND displays the
weather radar picture.
‐ The echoes appear in different colors, depending on the precipitation rates (black, green,
yellow, red or magenta).
‐ The selected ND range will determine how often the image is refreshed.
(2) Tilt Angle and Gain Mode
‐ The value of the tilt angle is in degrees, and quarters of a degree. It appears in blue in the
lower right-hand corner of the screen. This angle is the angle between the horizon and the
radar beam axis.
‐ “MAN” appears in white, when the manual gain mode is selected.
(3) Failure Messages
The ND lists the detected failures.
If the message is in “red”, the ND does not display a radar image.
If the message is in “amber”, the image is not affected.
WXR RT (red) : Radar transceiver failure.
WXR ANT (red) : Radar antenna failure.
WXR DU (red) : Overheating of the display unit
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
INDICATIONS ON ND
A330/A340 FLEET DSC-31-45 P 13/30
FCOM 19 AUG 10
WXR CTL (red) : Radar control unit failure.
WXR RNG (red) : Range error.
WXR WEAK
(amber)
: Calibration failure.
WXR ATT (amber) : Attitude control failure.
WXR STAB
(amber)
: Antenna stabilization failure.
WEATHER RADAR
Applicable to: ,
(1) Weather Radar Picture
When the radar is operating, and when the ND is not ‐ in PLAN mode, the ND displays the
weather radar picture.
‐ The echoes appear in different colors, depending on the precipitation rates (black, green,
yellow, red or magenta).
‐ The selected ND range will determine how often the image is refreshed.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
INDICATIONS ON ND
A330/A340 FLEET DSC-31-45 P 14/30
FCOM 19 AUG 10
(2) Tilt Angle and Gain Mode
‐ Auto-Tilt/Multi-Scan automatically sets the tilt angle to optimize Weather Radar detection.
‐ The value of the tilt angle is in degrees, and quarters of a degree. It appears in blue in the
lower right-hand corner of the screen along with MAN indication. This angle is the angle
between the horizon and the radar beam axis.
‐ When the Auto-Tilt/Multi-Scan function is lost, the tilt value is dashed, the “NO AUTO
TILT” message appears in amber on the ND, and only the manual mode is available. Once
selected, “MAN” appears in blue.
‐ “MAN GAIN” appears in white, when the manual gain mode is selected.
(3) Failure Messages
The ND lists the detected failures.
If the message is in “red”, the ND does not display a radar image.
If the message is in “amber”, the image is not affected.
WXR RT (red) : Radar transceiver failure.
WXR ANT (red) : Radar antenna failure.
WXR DU (red) : Overheating of the display unit
WXR CTL (red) : Radar control unit failure.
WXR RNG (red) : Range error.
WXR WEAK
(amber)
: Calibration failure.
WXR ATT (amber) : Attitude control failure.
WXR STAB
(amber)
: Antenna stabilization failure.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
INDICATIONS ON ND
A330/A340 FLEET DSC-31-45 P 15/30
FCOM 19 AUG 10
PREDICTIVE WINDSHEAR SYSTEM
Applicable to:
(1) Predictive windshear area indication
The predicted windshear areas are indicated by a red and black icon, and two yellow radial
lines. Windshear information is available in ARC and ROSE ND modes, and is displayed, even
if the weather radar is switched off, provided the weather radar panels’ WINDSHEAR switch is
set to AUTO.
Depending on the windshear alert level, the ND indication may be complemented by a PFD
message (Refer to DSC-31-40 FLAGS AND MESSAGES DISPLAYED ON PFD)
(2) Windshear messages (W/S : CHANGE MODE, W/S : SET RNG 10 NM)
These messages are displayed (in amber for caution alert, red for warning alert) on the ND,
when a windshear event is detected, and the ND mode (W/S:CHANGE MODE) or range
(W/S:SET RNG 10 nm) is inadequate to display windshear echoes.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
　
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