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Figure 7-42 illustrates the reference line behavior during a sequence of a 60° turn to the left followed by a 30° turn to the right. The sequence starts while the aircraft is heading to the North. The azimuth range is amber dashed and the reference line is black.

The following table compares the surveillance data displayed on ND and VD.
Navigation Display ND  Vertical Display VD 
TAWS – Terrain  Yes  Yes 
WXR – Ground mapping  Yes  No 
WXR – Weather  Yes  Yes 
WXR – Wind shear (PWS)  Yes  No 
WXR – Turbulence  Yes  No 
TCAS – Traffic  Yes  No 

7.1.8.3. PRIMARY FLIGHT DISPLAY (PFD)

AESS displays on PFD:
- Wind shear alerts (amber W/S AHEAD caution or red W/S AHEAD warning) from the weather radar function
- Terrain alerts from the TAWS function
- TCAS orders on VSI.
Note: AESS provides terrain indications on PFD contrary to EGPWS or T2CAS that illuminates the PULL UP/GPWS pushbutton.

7.1.8.4. AURAL ALERTS
AESS provides the same aural alerts as the ones provided by stand-alone systems:
- 
For TCAS alerts, refer to 3.1.7.2 – TCAS Aural Alerts

- 
For TAWS alerts, refer to 4.1.5 – TAWS Indications (see EGPWS)

- 
For WXR alerts, refer to 6.1.7 – Weather Radar Indications.

7.1.9. AESS CONTROLS
All AESS controls are common to Captain and First Officer, except the following that are limited to onside displays:
- KCCU: SURV key
- EFIS CP settings: display and range selection
- 
WXR SURV panel settings: elevation/tilt, gain, VD azimuth

- 
WXR MFD SURV CONTROLS settings: elevation/tilt, gain, mode (WX/MAP), WX ON ND.

 

7.1.9.1. KCCU SURV KEY
The KCCU SURV key is a shortcut to the MFD SURV page.
Refer to Figure 5-15 for the global KCCU picture.

 

Figure 7-44:
KCCU SURV key

7.1.9.2. EFIS CONTROL PANEL (EFIS CP)

7.1.9.3. SURV PANEL

With the EFIS CP, in addition to the range selection, the flight crew can select the information to be displayed on ND and VD (if available):
- WX: Weather, or
- TERR: Terrain, or
- TRAF: Traffic.
The flight crew cannot
simultaneously select WX and
TERR.
With the SURV panel, the flight crew can:
- TCAS5: Select TCAS modes (ABV, BLW or NORM, and TA only or TA/RA)
- TAWS: Deactivate the visual and aural alerts of the TAWS Mode 5 – Excessive glide slope deviation
- WXR: Manually set the elevation/tilt6, gain or VD azimuth (these settings for CAPT and F/O are independent) or activate the WXR AUTO mode7
- AESS: Select the function groups (WXR/TAWS 1 or 2, XPDR/TCAS 1 or 2).
　
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