A320飞机维护手册 AMM NAVIGATION 导航3(46)

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 -a visual warning: red W/S AHEAD message on the PFD. Display priority on PFD is given to level 3. The computer has to determine whether the aircraft is taking-off or landing to generate the aural warning message "GO AROUND, WINDSHEAR AHEAD" or "WINDSHEAR AHEAD, WINDSHEAR AHEAD". Transition between the GO AROUND, WINDSHEAR AHEAD and WINDSHEAR AHEAD, WINDSHEAR AHEAD aural warning messages is controlled by the GEAR UP discrete input.
Windshear caution alert (level 2)
 This level covers the events detected in a region from 0 to
 3 NM, within +/- 30 deg. of the aircraft heading but
 outside the windshear warning alert region (level 3).
 This caution alert is inhibited:

 -
during takeoff, from the time the aircraft attains 100 kts and until it reaches 50 ft AGL,

 -
during landing, below 50 ft AGL.
 There should be no windshear caution alert (level 2) above
 1200 ft.
 The windshear caution alert is announced by:

 

 -an aural warning: MONITOR RADAR DISPLAY

 -a visual warning: amber W/S AHEAD message on the PFD.

Windshear advisory alert (level 1) This level covers the events located within 5 NM from the aircraft, within +/- 30 deg. of the aircraft heading but outside the windshear warning and caution alert regions (levels 2 and 3). There should be no windshear advisory alert (level 1) above 1500 ft. No aural or visual warnings are provided for this advisory alert: only the windshear icon is superimposed on the radar image. The weather radar transmits the windshear alerts following their detection order. A maximum of 8 events can be
R 1EFF : 303-399, 401-499, 1 34-41-00Page 86 1 1 Config-3 Aug 01/05 1 1 1CES 1 transmitted. Therefore, alerts of different levels can be generated simultaneously.

 -------------------------------------------------------------------------------| ALERTS | PFD | ND | AURAL WARNING | |-------------|-----------------|-------------------|-------------------------| | Advisory | | windshear icon | | |-------------|-----------------|-------------------|-------------------------| | Advisory | | PWS SCAN | | | in windshear| | (GREEN) | | | mode only | | | | |-------------|-----------------|-------------------|-------------------------| | Caution | W/S AHEAD | windshear icon | MONITOR | | | (AMBER) | | RADAR DISPLAY | |-------------|-----------------|-------------------|-------------------------| | Warning | W/S AHEAD | windshear icon | during takeoff: | | | (RED) | | WINDSHEAR AHEAD | | | | | WINDSHEAR AHEAD | | | | | during landing: | | | | | GO AROUND | | | | | WINDSHEAR AHEAD | -------------------------------------------------------------------------------Table 2: Windshear Data Displayed
 **ON A/C ALL
 (6) Windshear warning displayed (Ref. table 3 below) (if the predictive windshear function is activated) (Ref. Fig. 017)
 (a)
 Windshear flags on NDs When a windshear fault occurs, an amber PRED W/S message comes into view. The radar image remains available if this fault does not affect the radar modes or detection function. A detected fault is displayed when:

 -
the aircraft is on the ground or the flap and slat control lever is in a position different from 0.

 -
the windshear AUTO/OFF switch on the radar control unit is set to AUTO (the fault message is not displayed when the switch is set to OFF).

 

 (b)
 Warning display on Upper ECAM Display Unit A detected windshear fault is indicated by the following amber messages:

 -NAV: PRED. W/S DET FAULT on EWD.
 -PRED. W/S DET on SD INOP SYSTEM area.
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 Messages Displayed on ND and upper ECAM DU
 Figure 017

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 This message is associated to the indications presented on the
 NDs.
 When the windshear AUTO/OFF switch is set to OFF on the weather
 radar control unit, a green or amber PRED W/S OFF memo message
 is presented to the crew.
 The color of this message depends on the flight phases.

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 -------------------------------------------------------------------------------
| | UPPER DU ECAM | ND | AURAL WARNING | |-------------|-----------------|-------------------|-------------------------| | PWS | NAV: | PRED W/S | Single chime | | SYSTEM | PRED. W/S DET | (AMBER) | | | FAULT | FAULT | | | | | (AMBER) | | | |-------------|-----------------|-------------------|-------------------------| | WINDSHEAR | PRED. W/S OFF | | | | AUTO/OFF | (GREEN or AMBER)| | | | SWITCH ON | | | | | CONTROL | | | | | UNIT IN | | | | | OFF | | | | | POSITION | | | | -------------------------------------------------------------------------------Table 3: PWS INOPERATIVE - Warning Data Displayed
　
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