TRAFFIC DISPLAY INTERFACE
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The ‘-02’ indicates the target is 200 feet below your
current aircraft altitude. The up arrow indicates the
target is climbing at a vertical rate of greater than 500
fpm.
The ‘+05’ indicates the target is 500 feet above your
current aircraft altitude. The down arrow indicates
the target is descending at a vertical rate greater than
500 fpm.
Absolute Altitude vs. Relative Altitude
The traffic processor may have an option to change the display of
altitude from relative to absolute. This is called ‘Flight Level’ mode
by some manufacturers. When activated, the altitude shown for
target aircraft will temporarily be shown in hundreds of feet MSL
when below 18,000 feet and as a flight level above 18,000 feet.
The altitude of your aircraft will be shown in the top right of the
SN3500 display.
Traffic Display Mode
The traffic display mode is annunciated next to the [TFC] button.
There are three different modes available which control how the
targets are displayed on the SN3500 and are toggled by pressing
the [TFC] button.
ON:
Enables display of all targets within the selected
map range.
M:
Manual mode. Traffic will be displayed within
the selected map range only when alerting
traffic is present.
A:
Auto mode. Same as Manual mode except that
map range will auto-scale to an appropriate
range to show the traffic on-screen.
Selecting the Manual (M) or Auto (A) modes will suppress the
display of non-alerting traffic (i.e. traffic other than RAs or TAs).
This can be useful in busy terminal areas where the display of all
traffic may cause the screen to become too cluttered.
TRAFFIC DISPLAY INTERFACE
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When the traffic display mode is set to ON, pressing the [CLR]
button will change the display mode to Auto. This has the effect of
removing non-alerting traffic from the display. Pressing [CLR] again
will toggle the traffic display mode back to ON. Note that alerting
traffic will always be shown on the display.
Altitude Mode
The currently selected altitude display mode will be displayed next
to the [TFC] button.
<none>
Normal altitude display mode. Target aircraft
/-2,700 ft. of your aircraft are displayed.
ABV: Above altitude display mode. Target aircraft
within –2,700 ft. and +9,000 ft. of your aircraft
are displayed.
BLW: Below altitude display mode. Target aircraft
within –9,000 ft. and + 2,700 ft. of your aircraft
are displayed.
XTD: Extended altitude display mode. Target aircraft
/-9,000 ft. of your aircraft are displayed.
TCAS Status
When traffic is not available, the following annunciations will be
displayed next to the [TFC] button. The Traffic Display Mode
annunciation will also be lined out in red.
TEST:
TCAS is currently in Test mode
OFF or STBY: TCAS is currently in Standby mode
FAIL:
TCAS data communication not present
Traffic Overlay with Moving Map
Traffic targets can be displayed simultaneously with the moving map
information described in Chapter 6. Targets will be overlaid on the
moving map flight plan and icons as shown in the example below.
