To display the TAWS Page, select the NAV group
and turn the small right knob until the TAWS Page
is displayed. Terrain information, aircraft ground
track, and GPS-derived MSL altitude are displayed
on the page. Altitude is shown in increments of 20
feet or in increments of 10 meters, depending on unit
configuration. The "G" to right of the MSL altitude
display reminds the pilot that altitude is GPS-derived.
The TAWS Page has two selectable view settings:
˚
120
Viewing Angle on the TAWS Page
•360˚ View—View from above aircraft depicting
surrounding terrain on all sides
•120˚ View—View of terrain ahead of and 60˚ to
either side of the aircraft flight path
NOTE: The TAWS Page gives a "Track Up" display
orientation, as indicated by the "TRK" label shown on
the display. This is the only orientation available for the
TAWS Page.
To display a 120˚ view:
Select the TAWS Page and press MENU. Select
1.
"View 120˚?".
2.
Press ENT. The TAWS Page displays the 120˚
view. To change to a 360˚ view, repeat step 1,
select "View 360˚?", and press ENT.
Seven display ranges are available, allowing for a
more complete view of the surrounding area.
To change the display range:
1.
Select the TAWS Page and press up or down
on the RNG key to select the desired range:
1 NM, 2 NM, 5 NM, 10 NM, 25 NM, 50 NM,
100 NM.
Aviation information such as airports, VORs, and
other navaids can be turned on or off on the TAWS
Page.
To show or hide aviation information:
1.
Press MENU.
2.
Select "Show (or Hide) Aviation Data?" and
press ENT. Pressing the CLR key when the
TAWS Page is displayed can also be used to
toggle aviation information on or off.
Inhibit Mode
TAWS provides an "inhibit mode". This mode is
designed to deactivate PDA/FLTA aural and visual
alerts when they are deemed unnecessary by the
aircrew. Flying VFR into an area where unique terrain
exists could cause the system to annunciate a nuisance
alert. Pilots should use discretion when inhibiting
the TAWS system and always remember to enable the
system when appropriate. Only the PDA and FLTA
alerts are disabled in the inhibit mode. See section 3
for more information on TAWS alerts.
190-00356-30 Rev C
Part Three: Section 2
TAWS Operation
Aviation Data
33
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