Note 2: When an ATSAW symbol is:
. Highlighted and exits the ATSAW envelope and the ND range, the TCAS computer:
o Removes the highlight signs (cyan circle on ND and cyan brackets on MCDU)
o Displays the TRAFFIC LIST page on MCDU if the current MCDU page was the TRAFFIC INFORMATION page (refer to 3.6.4.2 – MCDU).
. Selected and exits the ATSAW envelope and the ND range, the TCAS computer:
o Maintains the highlight and selection signs (highlight: cyan circle on ND, cyan brackets on MCDU; selection: cyan labels)
o Maintains the TRAFFIC INFORMATION page on MCDU
o Displays a half ATSAW symbol on the edge of the ND display area (e.g. ND edge in ROSE
NAV mode or outermost ring in ARC mode) Figure 3-17: Half with the correct bearing. ATSAW symbol
3.6.4.2. MCDU
On MCDU, the TCAS computer capable of ATSAW displays three pages:
-
The TRAFFIC LIST page
-
The TRAFFIC INFORMATION page
-
The ITP TRAFFIC LIST page.
The flight crew can access to these pages through the TRAF prompt (LSK 5R) in the MCDU MENU.
3.6.4.2.1. Traffic List Page
The TRAFFIC LIST page displays up to 90 aircraft that are in the ATSAW envelopes (refer to 3.6.3.1 – ATSAW Envelopes). Two sub-lists compose the Traffic List:
1.
The sub-list of aircraft
displayed on ND: flight numbers
are displayed with large
characters.
2.
The sub-list of aircraft not
displayed on ND: flight numbers
are displayed with small
characters.
These sub-lists are sorted in alphabetical order. When one aircraft does not provide its flight number (dashes replace the flight number), the aircraft is located at the end of the sub-list.
For each aircraft in the Traffic List:
- The flight number and the wake vortex category are displayed. If the wake vortex category is not available, a blank field replace the wake vortex category.
- A prompt gives access to details on the aircraft (refer to 3.6.4.2.2 – Traffic Information Page).
The Traffic List page also:
- Gives access to the ITP Traffic List (IN TRAIL PROCEDURE prompt available when the ITP option is activated, refer to 3.6.4.2.3 – ITP Traffic List Page)
- Provides two functions (TRAF ON and FLT ID ON, refer to 3.6.5.1 – MCDU controls).
3.6.4.2.2. Traffic Information Page
When the flight crew presses one LSK next to a flight number in the Traffic List, the MCDU displays the TRAFFIC INFORMATION page.
The TRAFFIC INFORMATION page contains the information transmitted by the given aircraft via ADS-B.
As described in 3.6.4.2.5 – Information sources for ADS-B traffic, when a piece of information is missing in ADS-B messages, the TCAS is the secondary source for some pieces of information. The second part of the title line shows the sources the TCAS computer used to fill in the TRAFFIC INFORMATION page. In Figure 3-20, the TCAS computer used both ADS-B and TCAS information (see ADS-B/TCAS indication in the title line).
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