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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