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selected TCAS range.
Pressing the TCAS button once after a
Pop-Up event occurs returns the display
to previous weather.The display will
once again be interrupted if another TA
or RA Pop-Up penetrates the protected
range of your aircraft.When the traffic is
no longer a threat,the screen automatically
reverts to displaying weather.
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ACS-5059 • Rev 5 - 02/2000
Collision Avoidance System User’s Manu a l
(Pushbutton)
(Pushbutton)
MSG. The message pushbutton activates
the ACARS mode.During ACARS display
a TCAS Pop-Up event replaces the
ACARS page with TCAS Only.When the
traffic is no longer a threat the screen
automatically reverts back to displaying
ACARS.
Pressing the MSG button once during
the event reverts the display back to the
previous ACARS display page.The display
will once again be interrupted if
another TA or RA event occurs.
This Function Selector turns on the
weather radar system and selects the
operating mode; TCAS selects a TCAS
only display, WXR/TCAS selects weather
with TCAS overlay display, and WXR
selects a weather only display.
Pressing the FL pushbutton replaces
intruders relative altitude with flight
level.During this period your own flight
level is displayed.Pressing the button
again changes the display back to relative
altitude.
The FL function is inhibited below
18,000’MSL unless barometric altimeter
settings are available from the air data
computer.
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ACS-5059 • Rev 5 - 02/2000
Collision Avoidance System User’s Manu a l
PPI-1T,
PPI-1U
and PPI-4B
Indicator
Controls
(cont’d) The Range Selector selects range to be
displayed.In the position labeled NO
WXR, the display shows TCAS traffic
only (no radar).
WARNING: The RDR-1E/ED and RDR-1F
transmitters continue to radiate in the 5
and 10 mile NO WXR ranges if an active
mode is selected on the radar control
panel (any mode except TEST).Refer to
the appropriate Weather Radar
Operating Manual for Cautions and
Limitations prescribed by FAA Advisory
Circular 20-68B.
The A/B (Above/Below) pushbutton or
toggle switch selects altitude display
limits.Three levels to choose from:
ABOVE (Climb phase)
9000 feet above;2700 feet below –
Change 7.0
8700 feet above;2700 feet below –
Change 6.04a
NORMAL (Enroute phase)
2700 feet above;2700 feet below.
BELOW (Descent phase)
2700 feet above;9000 feet below –
Change 7.0
2700 feet above;8700 feet below –
Change 6.04a
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ACS-5059 • Rev 5 - 02/2000
Collision Avoidance System User’s Manu a l
(Pushbutton)
The Function Selector turns on the
weather radar system and selects operating
mode;either a TCAS mode or a
Weather mode.
WEATHER Modes TCAS Mode
The Weather modes; WX, TURB
and MAP, show the display origin
at the bottom center of the
screen. The weather and TCAS
views are forward. The display
shows radar functions with
TCAS overlay depending on the
selection by the TCASAUTO
pushbutton.
At Power-Up the screen initially
displays the WX/TCAS overlay
mode. Mode annunciation is the
TCAS operational mode.
In the TCAS position TCAS ONLY
function is selected. No Weather
is displayed. The airplane symbol
appears in the lower 1/3 of
the screen displaying traffic
ahead of and behind your air -
craft.
At Power-Up the screen initially
displays all TCAS traffic only.
Mode annunciation is the TCAS
operational mode.
WEATHER Modes TCAS Mode
Pressing the button changes the
mode to TCAS Pop-Up which
displays WX only until a TA or
RA intruder appears.
Annunciation changes to TA
AUTO or TA/RA AUTO. When
TA/RA traffic enters the protected
area all TCAS traffic is shown
over weather. When the intruder
is no longer a threat the screen
automatically reverts back to
displaying weather only.
Pressing the button once more
changes the display back to
WX/TCAS overlay mode.
Pressing the button once
changes to TCAS Pop-Up mode.
TCAS AUTO is annunciated.
In Pop-Up mode the screen
clears and remains blank until
TA or RA traffic appears. Then
all TCAS traffic is displayed.
The screen automatically clears
when the intruder is no longer a
threat.
Pressing the button once more
changes the display back to
Full-Time display of all traffic.
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